The caput medusae sign, refers to developmental venous anomalies of the brain, where a number of veins drain centrally towards a single drain vein. The appearance is reminiscent of Medusa, a gorgon of Greek mythology, who was encountered and defeated by Perseus.
The sign is seen on both CT and MRI when contrast is administered. Angiographically the caput medusa appearance is seen only in the venous phase.
- 1. Boukobza M, Enjolras O, Guichard JP et-al. Cerebral developmental venous anomalies associated with head and neck venous malformations. AJNR Am J Neuroradiol. 1996;17 (5): 987-94. AJNR Am J Neuroradiol (abstract) [pubmed citation]
- 2. Saba PR. The caput medusae sign. Radiology. 1998;207 (3): 599-600. Radiology (citation) [pubmed citation]
- 3. Caput medusae from Wikipedia, the free encyclopedia. Caput medusae
Synonyms & Alternative Spellings
|Synonyms or Alternative Spelling||Include in Listings?|
|Medusa head sign||✓|
|Caput medusa sign||✗|
|Palm tree sign of developmental venous anomalies||✗|