Articles

Articles are a collaborative effort to provide a single canonical page on all topics relevant to the practice of radiology. As such, articles are written and edited by countless contributing members over a period of time. A global group of dedicated editors oversee accuracy, consulting with expert advisers, and constantly reviewing additions.

393 results found
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D-SPECT

D-SPECT represents the next step in the evolution of SPECT technology and is based on a unique acquisition geometry. It has nine arrays of cadmium zinc telluride (CZT) detectors, each of which rotates around its central axis with programmable angular rotation 1. The detectors are very compact al...
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Dacryoadenitis

Dacryoadenitis is infection of the lacrimal gland results in diffuse homogeneous enlargement, which can sometimes compress the globe. Most common organisms are Staphylococcus aureus, mumps, infectious mononucleosis, and influenza virus.
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Dacryocystitis

Dacryocystitis is the inflammation of the nasolacrimal sac related to impairment in the lacrimal drainage system and superimposed infection.  Epidemiology Dacryocystitis has a bimodal distribution: neonates due to congenital abnormalities and, when acquired, usually affect individuals older th...
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Dacryocystocele

Dacryocystoceles are caused by obstruction of both the proximal and distal ends of the nasolacrimal duct. An imperforate Hasner membrane causes the distal blockage, but the cause of proximal obstruction is less clearly understood. Epidemiology Dacryocystoceles, although rare, are the second mo...
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Dacryocystography

Dacryocystography is fluoroscopic contrast examination of the nasolacrimal apparatus. The duct is cannulated enabling contrast to be instilled into the nasolacrimal system. Indications The most frequent indication is epiphoria: tearing or watering of the eyes. Technique Equipment is similar ...
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Dagger sign (spine)

The dagger sign is a radiographic feature seen in ankylosing spondylitis as a single central radiodense line on frontal radiographs related to ossification of supraspinous and interspinous ligaments.
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Dameron-Lawrence-Bofte classification of proximal 5th metatarsal fractures

Dameron-Lawrence-Bofte classification of proximal fifth metatarsal fractures divides fractures into three zones based on anatomy: zone 1: tuberosity of 5th metatarsal avulsion fracture of tuberosity (pseudo-jones fracture) zone 2: meta-diaphyseal junction Jones fracture zone 3: proximal dia...
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Dandy-Walker continuum

Dandy-Walker continuum, also referred as Dandy-Walker spectrum or Dandy-Walker complex, corresponds to a group of disorders believed to represent a continuum spectrum of posterior fossa malformations, characterised by a combined posterior fossa cyst communicating with the fourth ventricle as wel...
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Dandy-Walker malformation

Dandy-Walker malformation (DWM) is the most common posterior fossa malformation, characterised by the triad of: hypoplasia of the vermis and cephalad rotation of the vermian remnant cystic dilatation of the fourth ventricle extending posteriorly  enlarged posterior fossa with torcula-lambdoid...
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Dandy-Walker variant

Dandy-Walker variant (DWv) is a less severe posterior fossa anomaly than the classic Dandy-Walker malformation (DWM) and is considered being on the lesser end of the disease spectrum in the Dandy-Walker continuum. Terminology This term was created to include those malformations that do not mee...
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Danger space

The danger space is a potential space located behind the true retropharyngeal space, which connects the deep cervical spaces to the mediastinum.  Gross anatomy Boundaries anteriorly: alar fascia posteriorly: prevertebral layer of the deep cervical fascia superiorly: clivus inferiorly: post...
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Dark bronchus sign

Dark bronchus sign is the appearance of relatively darker bronchus to the adjacent ground glass opacity. If the ground glass opacity progress to consolidation, air bronchograms will be visualised.  This sign is useful to identify diffuse ground glass opacity on HRCT in cases of Pneumocystis jir...
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Dartos muscle

The dartos muscle is the thin rugated fascial muscle of the scrotum made of smooth muscle. Hence it is also referred to as dartos fascia or simply the dartos. It forms from the subcutaneous tissue of the scrotum and base of the penis and attaches to the scrotal skin and fibrous midline septum be...
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Dashes and hyphens

Dashes and hyphens are used all over Radiopaedia.org and should be used in a particular way to ensure cohesive use across the site.   Dashes and hyphens In publishing, there are distinct differences between the following which usually are of different lengths: minus sign: used exclusively to ...
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Dawson fingers

Dawson fingers are a radiographic feature depicting demyelinating plaques through the corpus callosum, arranged at right angles along medullary veins (callososeptal location). They are a relatively specific sign for multiple sclerosis (MS), which presents as T2 hyperintensities. History and ety...
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De Garengeot hernia

De Garengeot hernia is defined as a femoral hernia containing the appendix. It is a rare phenomenon, with only 1% of all femoral hernias containing the appendix (and usually found incidentally at surgery), and only 0.08-0.13% containing an incarcerated acute appendicitis (sometimes detected on p...
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De Quervain tenosynovitis

De Quervain tenosynovitis, also known as washerwoman's sprain/strain, is a painful stenosing tenosynovitis involving the first extensor (dorsal) tendon compartment of the wrist (typically at the radial styloid). This compartment contains the abductor pollicis longus (APL) and extensor pollicis b...
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De Quervain thyroiditis

De Quervain thyroiditis, or subacute granulomatous thyroiditis, is a form of self-limited subacute thyroiditis usually preceded by upper respiratory tract viral infection such as mumps, measles, coxsackie virus, adenovirus, and influenza viruses. Epidemiology It usually affects middle age fema...
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Deauville five-point scale

The Deauville five-point scale (Deauville 5ps) is an internationally recommended scale for clinical routine and clinical trials using FDG-PET/CT in the initial staging and assessment of treatment response in Hodgkin lymphoma (HL) and certain types of non-Hodgkin lymphomas (NHL).  Inclusions FD...
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DeBakey classification

Along with the Stanford classification, the DeBakey classification is used to separate aortic dissections into those that need surgical repair, and those that usually require only medical management. Classification The DeBakey classification divides dissections into 1-5: type I: involves asce...
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DeBakey classification (mnemonic)

A mnemonic used to remember the DeBakey classification 1 is: BAD Mnemonic B: both ascending and descending aorta (type I) A: ascending aorta(type II) D: descending aorta (type III)
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Debated spellings

There are a number of debated spellings in our world. We are well aware that there are accepted differences between British and American English. We tend towards British spelling on the site, but realise that with an international audience, we will have British and American spelling on the site....
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Decibel

The decibel (dB) is a unit that measures the relative difference between two sound intensities. The relationship is logarithmic: dB = 10 log (I2 / I1) dB = relative intensity of the sounds I1 = intensity of sound 1 I2 = intensity of sound 2 Informally, we use decibel as a unit of "loudness,...
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Decidual cast

Decidual cast refers to the presence of an amount of relatively echogenic material in the uterine cavity in the context of an ectopic pregnancy. 
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Decidual reaction

A decidual reaction is feature seen in very early pregnancy where there is a thickening of the endometrium around the gestational sac. A thin decidual reaction of less than 2 mm is considered one of the features suggestive of an anembryonic pregnancy 2. A decidual reaction in some situations can...
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Dedifferentiated chondrosarcoma

A dedifferentiated chondrosarcoma is a combined tumour made up to two components which are often sharply demarcated from one another (thus raising the possibility of it representing a collision tumour). conventional chondrosarcoma (low grade) dedifferentiated high grade areas malignant fibrou...
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Deductive echocardiography

Deductive echocardiography is a step-by-step approach in diagnosing and differentiating congenital heart disease. Parameters assessed position of heart  levocardia dextrocardia viscero-atrial situs solitus inversus ambiguus ventricular loop D-loop L-loop conotruncus normal transpos...
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Deep brachial artery

The deep brachial artery or profunda brachii artery is a large branch of the brachial artery, located in the arm. Summary origin: brachial artery location: posterior aspect of the arm supply: triceps brachii main branches: middle collateral and radial collateral arteries Gross anatomy Ori...
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Deep brain stimulation

Deep brain stimulation is used in a variety of clinical settings, predominantly in patients with poorly controlled movement disorders. Although effective, its exact mode of function continues to be poorly understood 2.   Careful patient selection and target selection are essential if the proced...
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Deep brain ultrasound therapy

Deep brain ultrasound (DBUS) therapy is a form of precision medicine using a technique based on the principle of high-intensity focused ultrasound (HIFU), also referred to as focused ultrasound surgery (FUS). Technique The method combines two main components 1: guidance component MRI of the ...
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Deep cerebral vein thrombosis

Deep cerebral vein thrombosis is a subset of cerebral venous thrombosis involving the internal cerebral veins, often coexisting with cortical vein thrombosis or dural venous sinus thrombosis, and with different clinical presentations relying on which segment is involved. As such please refer to...
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Deep cervical fascia

The deep cervical fascia consists of 3 separate but related fascial layers that encircle structures in the neck and allow anatomic compartmentalisation. These layers cannot be visualized directly by cross sectional imaging. All 3 layers meet to form the carotid sheath. From superficial to deep, ...
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Deep circumflex iliac artery

The deep circumflex iliac artery arises from the external iliac artery. Gross anatomy origin: lateral aspect of the external iliac artery above the inguinal ligament, almost opposite to the inferior epigastric artery course: travels superiorly parallel to the inguinal ligament towards the ant...
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Deep femoral veins

The deep femoral vein or the profunda femoris vein lies anterior to its artery, and receives tributaries corresponding to the branches of the artery. Through these tributaries it connects distally with the popliteal and proximally with the inferior gluteal veins. It sometimes drains the medial a...
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Deep inferior epigastric perforator flap reconstruction

Deep inferior epigastric perforator flap (DIEP) reconstruction is a type of breast reconstruction surgery. It essentially involves the transfer of the patient's own skin and subcutaneous tissues from the lower abdominal wall to the chest to form the breast mound. Advantages The operation spare...
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Deep inguinal lymph nodes

The deep inguinal nodes lie medially to the femoral vein. There are around three in number and receive lymphatic channels that run with the deep femoral vessels and from the glans penis / clitoris from the perineum. There are common channels with the superficial inguinal nodes, and they drain in...
Article

Deep perineal pouch

The deep perineal pouch is an anatomic space above the perineal membrane in the urogenital triangle of the perineum, posterior to the transverse line between the ischial tuberosities. Gross anatomy The deep perineal pouch is above (deep to) the perineal membrane in the urogenital triangle. Bo...
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Deep peroneal nerve

The deep peroneal (fibular) nerve is one of two terminal branches of the common peroneal nerve. Summary origin: the terminal branch of common peroneal nerve in the lateral compartment of the leg course: passes into the anterior compartment of the leg, where it courses inferiorly into the dors...
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Deep posterior compartment of the leg

The deep posterior compartment of the leg is one of the four compartments in the leg between the knee and foot. Muscles within this compartment primarily produce ankle plantarflexion and toe flexion, with exception of the popliteus which acts on the knee. Of the two posterior compartments, the d...
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Deep spaces of the head and neck

Head and neck anatomy is described in slightly different terms in the radiology literature reflecting the importance of fascia lined spaces in confining various pathologies. As such the neck has been divided into a number of 'deep spaces' which overlap with traditional anatomical description. A...
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Deep sulcus sign

The deep sulcus sign on a supine chest radiograph is an indication of a pneumothorax. In a supine film (common in the ICU), it may be the only indication of a pneumothorax because air collects anteriorly and basally, within the nondependent portions of the pleural space, as opposed to the apex ...
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Deep temporal branches

The deep temporal arteries (anterior and posterior) are branches from the second part of the maxillary artery. They ascend between the temporalis muscle and the pericranium supplying the overlying muscle. The anterior branch communicates with the lacrimal artery by means of small branches which...
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Deep temporal nerves

The deep temporal nerves are a pair of motor branches of the anterior division of the mandibular division of the trigeminal nerve. It should not be confused with the temporal branch of the facial nerve. Gross anatomy The two deep temporal nerves divide off the anterior division and course abov...
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Deep vein thrombosis

The term deep vein thrombosis (DVT) is practically a synonym for those that occur in the lower limbs. However, it can also be used for those that occur in the upper limbs and neck veins. Other types of venous thrombosis, such as intra-abdominal and intracranial, are discussed in specific section...
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Deepest vertical pocket method

The deepest (maximal) vertical pocket (DVP) depth is considered a reliable method for assessing amniotic fluid volume on ultrasound 1-2. It is performed by assessing a pocket of maximal depth of amniotic fluid which is free of umbilical cord and fetal parts. The usually accepted values are: <2...
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Degenerative disc disease

Degenerative disc disease (DDD) is an exceedingly common entity in the spine, encountered with increasing frequency throughout life and becoming almost universal in late adulthood to a varying degree. It is related to a combination biomechanical stresses and genetic predisposition which alter th...
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Degloving bowel injury

Degloving bowel injuries are a rare type of bowel and mesenteric injury only being described a handful of times in the literature 1-5. In these injuries the bowel is stripped of its mesentery and muscle, leaving a "mucosal tube" 2,3. Perforation may or may not be present.  See also degloving i...
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Degloving injury

Degloving injuries can refer to a number of conditions: degloving soft tissue injury Morel-Lavallee lesion (closed degloving soft tissue injury) intramuscular degloving injury degloving bowel injury
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Degloving soft tissue injury

Degloving soft tissue injuries can be extensive and quite severe conditions. These may be open or, less commonly, closed injuries, which are known as Morel-Lavallee lesions. This article focuses on open injuries with closed injuries discussed in the Morel-Lavallee lesion article.  Terminology ...
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Dehiscence

Dehiscence is a general term referring to 'splitting open' and is used in a variety of contexts in medicine generally and radiology more specifically.  The two most common usages are: splitting open of a wound (e.g. sternal dehiscence) loss of bone separating one structure from another (e.g. ...
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Dehiscent jugular bulb

Dehiscent jugular bulbs are present when the sigmoid plate between a high riding jugular bulb and the middle ear is absent, allowing the wall of the jugular bulb to bulge into the middle ear cavity. Epidemiology The estimated incidence may be around 3.5-7 % of the symptomatic population (e.g. ...
Article

Dejerine Sottas disease

Dejerine-Sottas disease (also sometimes known as hereditary motor and sensory neuropathy type III or hypertrophic interstitial polyneuritis) is a rare hereditary motor and sensory neuropathy (HMSN). Clinical presentation The disease is characterised by an early-onset demyelinating neuropathy, ...
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Delayed bone age

A generalised retardation in skeletal maturation has different causative or aetiological factors, these can be classified as follows: chronic ill health congenital heart disease (especially cyanotic) chronic renal disease inflammatory bowel disease malnutrition: failure to thrive (FTT) ric...
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Delayed myocardial enhancement

Delayed myocardial enhancement, as seen on cardiac MRI, occurs when gadolinium contrast material seeps into fibrotic or necrotic myocardial tissue. It is due to a number of aetiologies, and has variable appearances. subendocardial enhancement indicates an ischaemic aetiology transmural enhance...
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Delayed myocardial enhancement on MRI (differential)

Delayed myocardial enhancement can occur in cardiac MR assessment due to a number of causes. They include: myocardial ischaemia: typically subendocardial and follows a vascular territory 1 nonischaemic cardiomyopathies hypertrophic cardiomyopathy nonischaemic dilated cardiomyopathy arrhyth...
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Delayed nephrogram

Delayed nephrogram, commonly described on plain film urography, but also visible on CT urography, is when there is absence or reduction of normal renal parenchymal enhancement on nephrographic phase images. A delayed nephrogram is characteristically unilateral and is usually distinguished from ...
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Delayed onset muscle soreness

Delayed onset muscle soreness (DOMS) refers to the muscular pain and swelling that follows unaccustomed exertion. Clinical presentation Patients may have an ache in affected muscles with reduced strength 4. Pathology DOMS is thought to occur from reversible microstructural muscle injury that...
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Delphian node

The Delphian (prelaryngeal/precricoid) node is one of the cervical lymph node groups that comprise level VI cervical lymph nodes and is not routinely excised in radical neck dissections. Gross anatomy It is located between the cricothyroid muscles, above the thyroid isthmus, lying directly ant...
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Delta resistive index

The delta resistive index (delta RI or Δ RI) is a measurement that can be made when performing Doppler ultrasound. In preterm babies who have hydrocephalus secondary to intraventricular haemorrhage, the delta RI can be used to determine whether decompression of the ventricular system with a...
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Deltoid ligament injury

Deltoid ligament injuries involve the deltoid ligament that forms the medial part of the ankle joint. It attaches the medial malleolus to multiple tarsal bones. Pathology Mechanism of injury It occurs due to eversion and/or pronation injury, or can be associated with lateral ankle fractures. ...
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Deltoid ligament of the ankle

The deltoid ligament or medial collateral ligament of the ankle forms the medial part of the ankle joint. It attaches the medial malleolus to multiple tarsal bones.  Gross anatomy The ligament is composed of two layers. The superficial layer has variable attachments and crosses two joints whil...
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Deltoid muscle

The deltoid muscle is the largest of the shoulder muscles. The muscle is composed of three heads (clavicular, acromial and spinous), although electromyography suggests that there are at least seven control regions that could act independently 1. Summary origin: lateral 1/3 of the clavicle, acr...
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Dementia with Lewy bodies

Dementia with Lewy bodies (DLB), also known as Lewy body disease, is a neurodegenerative disease (a synucleinopathy to be specific) related to Parkinson disease (PD). It is reported as the second most common form of dementia following Alzheimer disease (AD), accounting for 15-20% of cases at aut...
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Demise of a twin

Demise of a twin is a complication that can occur in a twin pregnancy (particularly monochorionic pregnancies) and may be due to a wide range of conditions. Once the twin dies, most of the dead twin tends to be absorbed leaving behind a small flattened remnant known as the fetus papyraceus. Epi...
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Demyelinating disorders

Demyelinating disorders are a subgroup of white matter disorders characterized by the destruction or damage of normally myelinated structures. These disorders may be inflammatory, infective, ischaemic or toxic in origin and include 1-7: autoimmune demyelination multiple sclerosis (MS) Marburg...
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Demyelination

Demyelination is incorrectly often equated to multiple sclerosis, whereas in reality it is a generic pathological term simply describing, as the word suggests, the loss of normal myelin around axons in the central nervous system. This should be distinguished from dysmyelination where the formati...
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Demyelination protocol (MRI)

MRI protocol for demyelinating diseases is a group of MRI sequences put together to best approach these white matter disorders characterized by the destruction or damage of normally myelinated structures. These disorders may be inflammatory, infective, ischaemic or toxic in origin.  Note: This ...
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Denervation changes in muscles

Denervation changes in muscles can be observed in a number of settings. Radiographic features MRI in the very early stage, muscle signal may be normal earliest change is increased T2 signal (best seen on a fat saturated T2WI such as STIR) chronic changes are marked by muscle atrophy and fat...
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Dengue

Dengue is a mosquito-borne acute systemic viral infection caused by any of the four serotypes of the dengue virus. Clinical presentation The infection can lead to a broad spectrum of symptoms ranging from mild, nonspecific, influenza-like prodromes called dengue fever to more severe forms know...
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Dense hilum sign

The dense hilum sign suggests a pathological process at the hilum or in the lung anterior to posterior to the hilum. Malignancy, especially lung cancer, should be suspected. Radiographic features On a well-centred chest PA radiograph the density of the hilum is comparable on both sides. In the...
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Dense metaphyseal bands (differential)

The differential diagnosis of dense metaphyseal bands is wide. Differential diagnosis Common chronic anaemia, e.g. sickle cell disease, thalassemia chemotherapy, e.g. methotrexate growth acceleration lines following growth arrest due to systemic illness or stress in infancy or childhood, e....
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Dental abscess

Dental (periapical) abscess is an acute infection of the periapical tissue around the root of the tooth. Clinical presentation Patients may present with pain, oedema, and purulent discharge localised to the site of pathology with or without fever and tender cervical lymphadenopathy 1. Patholo...
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Dental caries

Dental caries are very common but can lead to serious morbidity.  Pathology Dental caries are areas of focal enamel and dentin deminerlisation. There are multiple theories in their pathogenesis but contributing factors include a combination of diet, anatomy, oral cavity microbiome and time 1,2...
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Dentate gyrus

The dentate gyrus is located in the mesial temporal lobe and forms part of the hippocampal formation, along with the hippocampus proper and subiculum.  The dentate gyrus receives fibres from the entorhinal cortex via the perforant path and projects fibres to the CA3 portion of the hippocampus. ...
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Dentate nucleus

The dentate nucleus is the largest and most lateral of the cerebellar nuclei, located medially within each cerebellar hemisphere, just posterolateral to the fourth ventricle 1.  It is part of the triangle of Guillain and Mollaret, connected to the contralateral red nucleus via the superior cere...
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Denticulate ligaments

The denticulate ligaments are bilateral triangular extensions of pia mater that anchor the spinal cord to the dura mater. They are formed by pia mater of the spinal cord coursing in-between the dorsal and ventral nerve roots bilaterally. They function to provide stability to the spinal cord wit...
Article

Dentigerous cyst

Dentigerous cysts, also called follicular cysts, are slow growing benign and non-inflammatory odontogenic cysts that are thought to be developmental in origin. On imaging, they usually present as a well-defined and unilocular radiolucency surrounding the crown of an unerupted or impacted tooth ...
Article

Denver criteria for blunt cerebrovascular injury

The Denver criteria are a set of screening criteria for blunt cerebrovascular injury (BCVI) in trauma used to reduce the need for CT angiography and its associated radiation exposure.  Screening criteria The screening protocol criteria 1,3 for BCVI are divided into signs and symptoms of BCVI a...
Article

Dependent viscera sign

The dependent viscera sign is one of the signs of diaphragmatic rupture on axial CT or MR images, where herniated viscera lies against the posterior thoracic wall in a dependent position, as it is no longer supported by the diaphragm. See also  collar sign (or hour glass sign)
Article

Depressed skull fracture

Depressed skull fractures result in the bone of the skull vault being folded (depressed) inward into the cerebral parenchyma. It is usually the result of a high energy impact to the skull. Pathology These mostly (~75%) occur in the frontoparietal region 3. Associations There are number of as...
Article

Depressor anguli oris

The depressor anguli oris (triangularis) muscle is one of the muscles of facial expression. Summary origin: oblique line of the mandible insertion:  ​angle of the mouth superficial fibres from both sides merge to form the transversus menti innervation: facial nerve action:  depresses the...
Article

Dermatofibrosarcoma protuberans

Dermatofibrosarcoma protuberans (DFSP) is an uncommon exophytic, slow growing, low grade, spindle cell tumour arising in the dermal and subcutaneous tissues, particularly of the trunk region with excellent outcome after complete surgical resection. Epidemiology The tumour occurs in patients of...
Article

Dermatographia

Dermatographia, also known as skin writing, refers to a skin condition in which skin scratches causes linear red marks. The cause is unknown, however, it is related to penicillin use and mastocytosis.
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Dermatomyositis

Dermatomyositis is an autoimmune inflammatory myositis. Epidemiology There is a recognised female predilection. It has a bimodal age of presentation depending on the variant: juvenile dermatomyositis (JDM): affects children and tends to be more severe adult dermatomyositis (ADM): typically a...
Article

Dermolipoma

The dermolipoma is one of the fat-containing epibulbar mass lesions of lateral canthal area beneath the temporal or superotemporal bulbar conjunctivae. Epidemiology  Dermolipomas are congenital and more commonly seen in young patients with mean age of 30 years old. There is no gender predilect...
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Derotation screw

A derotational screw is an orthopaedic device used for internal fixation of fractures to, unsurprisingly, limit rotation of the fracture. They are applied across fractures at risk of rotation and hence avascular necrosis.
Article

Descending aorta

The descending aorta is the continuation of the aortic arch in the posterior mediastinum. Gross anatomy The descending aorta commences at the level of the fourth thoracic vertebra body, on its left, in the plane of Ludwig as the continuation of the aortic arch. It descends in the posterior med...
Article

Descending branch of the lateral circumflex femoral artery

The descending branch of the lateral circumflex femoral artery descends from the lateral aspect of the femoral neck and extends as far as the knee where it provides blood to the patellar network (the complex arterial anastomosis around the knee). Summary origin: lateral circumflex femoral arte...
Article

Descending colon

The descending colon is the continuation of the transverse colon after the left colic flexure, where the colon loses its mesentery.  Gross anatomy The descending colon measures up to 25 cm length and is secondarily retroperitoneal. It descends down and is attached to the left posterior abdomin...
Article

Descending geniculate artery

The descending geniculate artery arises from the distal portion of the superficial femoral artery before it becomes the popliteal artery. Along with other arterial branches, it provides blood to the patella network and the knee. Summary origin: superficial femoral artery supply: patella netwo...
Article

Describing a fracture (an approach)

Describing a fracture is a basic requirement when making an assessment of a plain radiograph. There are many ways to approach the assessment of the radiograph; this is just one approach. I: Describe the film What film (or films) are you looking at? Check the who, what, why, when, and where. I...
Article

Desmoid tumour

Desmoid tumours are benign, non-inflammatory fibroblastic tumours (see WHO 2002 classification of soft tissue tumours) with a tendency for local invasion and recurrence but without metastasis. Terminology The terms desmoid tumour and aggressive fibromatosis are occasionally used synonymously b...
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Desmoplastic fibroma

Desmoplastic fibromas (DF) are extremely rare bone tumours that do not metastasize, but may be locally aggressive. They are considered to be a bony counterpart of soft tissue desmoid tumours and are histologically identical.  Clinical presentation Incidence is ~0.3%. The most common areas of i...

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