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.

705 results found
Article

Polycystic ovarian syndrome

Polycystic ovarian syndrome (PCOS), also known as hyperandrogenic anovulation, is a chronic anovulation syndrome associated with androgen excess.  The Rotterdam criteria is used to make the diagnosis of PCOS and require any two of the following three criteria for the diagnosis, as well as the e...
Article

Carpal tunnel syndrome

Carpal tunnel syndrome results from compression of the median nerve (tunnel syndrome) within the carpal tunnel. It is a cause of significant disability and is one of three common median nerve entrapment syndromes, the other two being anterior interosseous nerve syndrome and pronator teres syndro...
Article

CREST syndrome

CREST syndrome (also known as limited systemic sclerosis or limited scleroderma) is a variant of progressive systemic sclerosis (PSS) and stands for C - calcinosis R - Raynaud phenomenon E - oesophageal dysmotility S - sclerodactyly T - telangiectasia See also systemic sclerosis
Article

Charcot-Marie-Tooth disease

Charcot-Marie-Tooth (CMT) disease, also known as hereditary motor and sensory neuropathy (HMSN), refers to a heterogeneous group of inherited peripheral neuropathies rather than a single clinical entity 9. Epidemiology The prevalence of CMT in one Norwegian study was 82.3 cases per 100,000 peo...
Article

Anterior choroidal artery syndrome

Anterior choroidal artery syndrome is a rare entity caused by cerebral infarction in the anterior choroidal artery territory. Clinical presentation In its complete form, the syndrome is characterized by the triad of 7: contralateral hemiplegia contralateral hemisensory loss contralateral ho...
Article

Anti-synthetase syndrome

Anti-synthetase syndrome is a systemic, inflammatory, autoimmune disease that is characterized by inflammatory myositis, polyarthritis associated with interstitial lung disease, and anti-synthetase autoantibodies. Pathology Anti-synthetase syndrome can result from autoantibodies to eight of th...
Article

Foix-Chavany-Marie syndrome

Foix-Chavany-Marie syndrome, also known as bilateral anterior opercular syndrome or anterior operculum syndrome, is a cortical form of pseudobulbar palsy classically caused by bilateral anterior opercular lesions. Clinical presentation The clinical presentation is of pseudobulbar palsy that is...
Article

Susac syndrome

Susac syndrome, also known as retinocochleocerebral vasculopathy or SICRET syndrome (small infarctions of cochlear, retinal and encephalic tissue), is a rare syndrome typically affecting young to middle-aged women that is clinically characterized by the triad of acute or subacute encephalopathy,...
Article

Hypoplastic left heart syndrome

Hypoplastic left heart syndrome (HLHS) is a cyanotic congenital cardiac anomaly where affected individuals can have profound cyanosis and cardiac failure. It is one of the most common causes for a neonate to present with congestive cardiac failure and the 4th most frequent cardiac anomaly to ma...
Article

McCune-Albright syndrome

McCune-Albright syndrome (MAS) (also known as McCune-Albright-Sternberg syndrome) is a genetic disorder characterized by the triad: endocrinopathy: precocious puberty polyostotic fibrous dysplasia: more severe than in sporadic cases cutaneous pigmentation: coast of Maine 'café au lait' spots ...
Article

Parinaud syndrome

Parinaud syndrome, also known as dorsal midbrain syndrome, is a supranuclear vertical gaze disturbance caused by pathology of the dorsal midbrain region, often, but not exclusively, via compression of the superior tectal plate. Clinical presentation Parinaud syndrome is characterized by a clas...
Article

Collet-Sicard syndrome

Collet-Sicard syndrome, also known as condylar jugular syndrome, is a constellation of cranial nerve palsies due to neoplastic or non-neoplastic lesions at the jugular foramen 1,2. Clinical presentation Vernet syndrome, consisting of motor paralysis of glossopharyngeal nerve (CN IX) vagus ne...
Article

Hutchinson syndrome

Hutchinson syndrome is a seldom-used term to denote a syndromic presentation of children with craniocerebral neuroblastoma metastases. Terminology Unfortunately, there is a lack of consensus in the definition with two descriptions most commonly encountered in the literature: limping and irrit...
Article

Distal intersection syndrome

The distal intersection syndrome relates to tenosynovitis of the extensor pollicis longus (EPL) tendon (3rd extensor compartment), where it crosses the extensor carpi radialis longus (ECRL) and brevis (ECRB) tendons (2nd extensor compartment) 1. It is distinct from intersection syndrome which oc...
Article

DICER1 syndrome

DICER1 syndrome is a rare autosomal dominant disorder predisposing individuals to the development of multiple tumor types. Epidemiology DICER1 syndrome most commonly manifests in children, adolescents and young adults 8. Clinical presentation The clinical presentation will depend on the pa...
Article

Broca aphasia

Broca aphasia, also known as expressive aphasia or motor aphasia, is a type of non-fluent aphasia thought to be caused by injury (e.g. stroke) to Broca's area and the surrounding frontal fields 1,2, although there is controversy regarding the exact localization that leads to Broca aphasia 3. Cl...
Article

Horner syndrome

Horner syndrome classically presents as an ipsilateral enophthalmos, blepharoptosis, pupillary miosis and facial anhidrosis due to disruption at some point of the oculosympathetic pathway. Ptosis is due to interruption of the sympathetic motor innervation of the superior tarsal muscle which is ...
Article

Medial medullary syndrome

Medial medullary syndrome, also known as Déjerine syndrome,  is secondary to thrombotic or embolic occlusion of small perforating branches from vertebral or proximal basilar artery supplying the medial aspect of medulla oblongata1,2. Epidemiology Represents less than 1% of brainstem stroke syn...
Article

Angelman syndrome

Angelman syndrome refers to a genetic and neurodevelopmental condition principally affecting the central nervous system. Epidemiology The reported estimated incidence can variable ranging from around 1 in 20,000 to 1 in 12,000 live births. No definite gender predilection has been described. C...
Article

Prader-Willi syndrome

Prader-Willi syndrome is a rare genetic disorder. It is the most common cause of obesity caused by a genetic syndrome. Clinical presentation Prader-Willi syndrome is primarily characterized by: neonatal hypotonia sexual infancy: hypogonadism obesity morbid obesity resulting from hyperphagi...

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.