|Classification and external resources|
Axial CT showing portosystemic collateral circulation via the umbilical vein: caput medusae in liver cirrhosis
|ICD-10||I86.8 (ILDS I86.820)|
Caput medusae is the appearance of distended and engorged paraumbilical veins, which are seen radiating from the umbilicus across the abdomen to join systemic veins. The name caput medusae (Latin for "head of Medusa") originates from the apparent similarity to Medusa's hair once Athena had turned it into snakescitation needed.
The umbilical vein carries oxygenated blood from mother to fetus in utero, and normally closes within one week of birth. In portal hypertension, the umbilical vein can become re-canalized.
- Produces abdominal collateral veins to bypass the blocked inferior vena cava and permit venous return from the legs.
Determine the direction of flow in the veins below the umbilicus. After pushing down on the prominent vein, blood will:
- Caput Medusae - flow is towards the legs
- Inferior vena cava obstruction - flow is towards the head.
Content from Wikipedia, the Free Encyclopedia
What Is This Site? The Ultimate Study Guide is a mirror of English Wikipedia. It exists in order to provide Wikipedia content to those who are unable to access the main Wikipedia site due to draconian government, employer, or school restrictions. The site displays all the text content from Wikipedia. Our sponsors generously cover part of the cost of hosting this site, and their ads are shown as part of this agreement. We regret that we are unable to display certain controversial images on some pages the site at the request of the sponsors. If you need to see images which we are unable to show, we encourage you to view Wikipedia directly if possible, and apologize for this inconvenience.
A product of XPR Content Systems. 47 Union St #9K, Grand Falls-Windsor NL A2A 2C9 CANADA