Articles
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More than 200 results
Article
POEMS syndrome
POEMS syndrome is the acronymic name for a rare multisystem paraneoplastic disorder including the following features:
P: polyneuropathy
O: organomegaly
E: endocrinopathy
M: monoclonal gammopathy
S: skin changes
Clinical presentation
The diagnostic criteria differ from the acronym. Accordi...
Article
Thoracic aortic aneurysm
Thoracic aortic aneurysms are a type of thoraco-abdominal aneurysm. They are much less common than abdominal aortic aneurysms (0.16% vs 4%) 17. There is a wide range of causes, and the ascending aorta is the segment most commonly affected. Both CT-angiography and MR-angiography are the modalitie...
Article
LI-RADS US Surveillance
Liver Imaging Reporting and Data System Ultrasound Surveillance (LI-RADS US Surveillance) is a standardized system with recommendations for imaging technique, interpretation and reporting for surveillance of hepatocellular carcinoma (HCC) using unenhanced ultrasound in patients at high risk for ...
Article
DNA
DNA (deoxyribonucleic acid) is a nucleic acid that encodes the genetic information (genome) necessary for RNA (ribonucleic acid) transcription (transcriptome) and protein synthesis (proteome) 1. It is contained in the nucleus of eukaryotic cells in the form of chromatin or chromosomes 7,8. Human...
Article
Megalencephalic leukoencephalopathy with subcortical cysts
Megalencephalic leukoencephalopathy with subcortical cysts, also known as Van der Knaap disease, refers to a rare inherited autosomal recessive disease characterized by diffuse subcortical leukoencephalopathy associated with white matter cystic degeneration.
Epidemiology
The age at symptoms m...
Article
Voriconazole-induced periostitis
Voriconazole-induced periostitis is similar to fluorosis and is most likely due to the high fluoride content in the drug 10. The side-effect is related to the dose and duration of treatment and resolves rapidly after drug cessation 1.
Epidemiology
Voriconazole-induced periostitis primarily occ...
Article
Critical shoulder angle
Critical shoulder angle (CSA) is a parameter that, in some studies 1, correlates with rotator cuff tears (RCT) or glenohumeral osteoarthritis (OA). Other studies have shown that CSA is neither associated with RCT 5,6 nor OA at 20-year follow-up 7.
The CSA measures acromial cover and the inclin...
Article
Cornea
The cornea forms the fibrous layer of the anterior portion of the eye. It functions to refract light entering the eye.
Summary
location: anterior one-sixth of the eyeball
blood supply: avascular
innervation: long ciliary nerves
relations: continuous with the sclera posteriorly
Gross anat...
Article
Common extensor origin of the elbow
The common extensor origin of the elbow classically refers to the common tendon of the following forearm extensor muscles, which form a common footprint at the lateral epicondyle 1,2:
extensor carpi radialis brevis (ECRB)
extensor digitorum communis (EDC)
extensor digiti minimi (EDM)
extenso...
Article
Medical abbreviations and acronyms (F)
This article contains a list of commonly used medical abbreviations and acronyms that start with the letter F and may be encountered in medicine and radiology (please keep both the main list and any sublists in alphabetic order).
A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q...
Article
Congenital dislocation of the knee
Congenital dislocation of the knee is a rare condition characterized by hyperextension or anterior dislocation of the femorotibial joint of the knee presenting at birth.
Epidemiology
The incidence of congenital dislocation of the knee is estimated to be 1 in 100,000 1,6.
Pathology
Congenital...
Article
Orbital cavernous venous malformation
Orbital cavernous venous malformations or cavernous hemangiomas are the most common orbital vascular lesions in adults.
Cavernous malformations are found throughout the body. This article focuses on orbital cavernous hemangiomas. Please refer to the article on cavernous venous malformation for ...
Article
Anterior inferior cerebellar artery
The anterior inferior cerebellar artery (AICA) is one of three vessels that provides arterial blood supply to the cerebellum. It has a variable origin, course and supply, with up to 40% of specimens not having an identifiable standard AICA. The amount of tissue supplied by the AICA is variable (...
Article
Neurovascular compression syndromes
Neurovascular compression syndromes are a form of vascular compression disorders where there is usually compression or distortion of a cranial nerve due to a redundant or aberrant vascular structure.
Clinical presentation
Not all cases of neurovascular contact are clinically symptomatic. Prese...
Article
Abducens nerve palsy
Abducens nerve palsy, or sixth nerve palsy, results in weakness of the ipsilateral lateral rectus muscle.
Clinical presentation
Patients present with horizontal diplopia with an inability to abduct the ipsilateral eye, thereby resulting in an esotropia (nasal deviation of the eye).
Pathology
...
Article
Disclosures
Disclosures are an important part of your user profile.
Radiopaedia.org strives to ensure our content is free from commercial bias or undue corporate influence. Furthermore, transparency is important to us. We, therefore, encourage and require you to truthfully and fully include relevant finan...
Article
Split pons sign
The split pons sign describes the shape of the pons in patients with horizontal gaze palsy with progressive scoliosis (HGPPS).
The split pons sign may be appreciated on axial MRI sequences and describes a particular pattern of hypoplasia of the pons, whereby there is a deep midline dorsal cleft...
Article
Steady-state free precession MRI
Steady-state free precession MRI (SSFP) is a type of gradient echo MRI pulse sequence in which a steady, residual transverse magnetization (Mxy) is maintained between successive cycles. The sequence is noted for its superiority in dynamic/cine assessment of cardiac function.
Discussion
To unde...
Article
PTEN-related diseases
PTEN-related diseases share mutations in the PTEN gene and share clinical and radiological manifestations characterized by hamartomas and tumors in various parts of the body. They include 1,2:
Bannayan-Zonana syndrome
COLD syndrome
Cowden syndrome
Lhermitte-Duclos disease
When a patient has...
Article
Cubital tunnel syndrome
Cubital tunnel syndrome is an ulnar nerve compression neuropathy (tunnel syndrome) due to pathological compression of the ulnar nerve at the elbow proximal, within, and distal to the cubital tunnel 12.
Epidemiology
The compression of the ulnar nerve at the elbow is the second most common perip...
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