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 continuously improved upon by countless contributing members. Our dedicated editors oversee each edit for accuracy and style. Find out more about articles.
16,880 results found
Article
Pseudokidney sign (intussusception)
The pseudokidney sign is a characteristic ultrasound appearance in some cases of intestinal intussusception. It refers to the longitudinal ultrasound appearance of the intussuscepted segment of bowel which mimics a kidney.
The fat-containing mesentery, containing vessels, which is dragged into ...
Article
Clinical Radiology (journal)
Clinical Radiology (ISO4: Clin Rad) is the official journal of the Faculty of Clinical Radiology of the Royal College of Radiologists (UK) and was first published in 1960 1. It is published monthly and its current editor is Mike J Weston and its Impact Factor is 2.350 (ISI) 2.
History
Clinica...
Article
Lateral humeral condyle fracture
Lateral humeral condyle fractures also referred to simply as lateral condyle fractures (in the appropriate context), are relatively common elbow fractures that predominantly occur in children. They may be subtle but are hugely important to diagnose promptly because if they are missed, they tend ...
Article
Airway pressure release ventilation
Airway pressure release ventilation (APRV) is an alternative mode for mechanical ventilation. It can be adopted as an alternative method for difficult-to-oxygenate patients with acute lung injury (ALI) / acute respiratory distress syndrome (ARDS).
It is usually not recommended in patients who ...
Article
Synovial herniation pit
Synovial herniation pits, also known as Pitt pits or the descriptor fibrocystic changes at the anterosuperior femoral neck, are a common, usually incidental, finding on imaging.
Epidemiology
Prevalence on x-rays of normal adults is ~5% (range 4-12%) 3.
Associations
cam morphology FAI: occur ...
Article
Right ventricular outflow tract obstruction
A right ventricular outflow tract obstruction (RVOTO) refers to any form of obstruction exerting effects on the right ventricular outflow tract. The obstruction itself however can occur at various sites inclusive of the following levels:
mid-right ventricle
infundibulum (e.g. tetralogy of Fall...
Article
Tibial tuberosity transfer
Tibial tuberosity transfer is a surgical procedure performed for patella instability. Tibial tuberosity transfer can simultaneously correct a high-riding patella. The goal of the surgery is often to transfer the distal attachment of the patellar tendon, thereby shifting the force vector medially...
Article
Synovial chondrosarcoma
Synovial chondrosarcoma refers to a very rare malignant cartilaginous neoplasm arising from the synovium.
Epidemiology
There can be a wide spectrum in the age of presentation from 25-75 years of age. A slight male predilection may be present.
Pathology
It can either as a primary lesion (pri...
Article
Ventriculopleural shunt
Ventriculopleural shunting is an alternative option for the diversion of CSF and relief of hydrocephalus. In this technique, the distal catheter is placed in the pleural space. It is an alternative to a ventriculoperitoneal shunt (often considered the next most used alternative).
Complications
...
Article
Extrinsic muscles of the larynx
The extrinsic muscles of the larynx are groups of muscles that act on the larynx as a whole to alter its position. Functionally they can be described as two groups of muscles:
infrahyoid muscles: depressors of the hyoid and larynx which are innervated by various nerves from the ansa cervicalis)...
Article
Coronary stent thrombosis
Coronary stent thrombosis or scaffold thrombosis refers to an acute thrombus or occlusion in a coronary segment previously treated with a coronary stent or scaffold. It is a severe complication of percutaneous coronary intervention (PCI) and a major adverse cardiovascular event.
Epidemiology
C...
Article
Mandibular fracture
Mandibular fractures are relatively common especially among young men. Although traditionally the mandible and base of skull are thought to form a complete bony ring, interrupted only by the TMJs. This should mean that the mandible should fracture in two places (akin to the bony pelvis) making s...
Article
Polymyositis (pulmonary manifestations)
Lung involvement in polymyositis can have a number of manifestations including those resembling interstitial lung disease.
For a general discussion of polymyositis, please refer to the parent article.
Radiographic features
The lungs may present with a mixture of different fibrotic patterns, e...
Article
Esophageal leiomyoma
Esophageal leiomyoma is a benign smooth muscle neoplasm of the esophagus. It is the most common benign tumor of the esophagus.
Epidemiology
It is most frequently presents in young and middle age groups (20-50 years). The overall incidence is around 8-43 per 10,000 autopsy series 4.
Clinical p...
Article
Hemorrhagic pneumonia
Hemorrhagic pneumonia refers to a descriptive term for pneumonia (infective - inflammatory consolidation of the lung) that is complicated by pulmonary hemorrhage. It can be localized or diffuse to varying degrees depending on the extent of involvement +/- etiological agent.
Pathology
The preci...
Article
Tegmen
The tegmen is the thin osseous plate that separates the middle cranial fossa from the tympanic and mastoid cavities of the temporal bone. It is comprised of two or three parts 1,2:
tegmen tympani (roof of the tympanic cavity)
tegmen mastoideum (roof of the mastoid cavity)
tegmen antri (roof o...
Article
Chronic ACL deficiency
Chronic ACL deficiency is a long term adverse outcome that can result from an untreated ACL injury. Patients often experience an unstable knee. They often result in or are associated with meniscal injury (medial more than lateral) and chondral damage 1-4.
See also
mucoid degeneration of ACL
Article
Linear energy transfer
Linear energy transfer (LET) is the average (radiation) energy deposited per unit path length along the track of an ionizing particle. Its units are keV/μm.
Linear energy transfer describes the energy deposition density of a particular type of radiation, which largely determines the biological ...
Article
Preinvasive lesions of the lung
Preinvasive lesions of the lung are those pulmonary lesions that have not yet progressed to malignancy but have the potential to do so. This category includes:
squamous dysplasia (SD) of lungs: squamous cell carcinoma in situ (CIS) of lung
preinvasive adenocarcinoma of the lung 5,6
atypical a...
Article
Cruciate ligament tears (knee)
The cruciate ligaments of the knee commonly tear:
anterior cruciate ligament (ACL) tear
the ACL is the most commonly torn knee ligament 1
posterior cruciate ligament (PCL) tear
tears of the PCL are less common and usually less significant 2
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