What causes Caput Medusa?
What Causes Caput Medusae? The appearance of swollen veins around your belly button is a symptom of circulatory issues. The root cause of caput medusae is portal hypertension, which is an increase in pressure in the portal vein. That’s the vein that moves blood from your digestive tract to your liver.
What happens in caput medusae?
Caput medusae is one of the cardinal features of portal hypertension. The appearance is due to cutanous portosystemic collateral formation between distended and engorged paraumbilical veins that radiate from the umbilicus across the abdomen to join systemic veins.
What pathology is the caput medusae characteristic during examination of the abdomen?
Caput medusae is the appearance of distended and engorged superficial epigastric veins, which are seen radiating from the umbilicus across the abdomen. The name caput medusae (Latin for “head of Medusa”) originates from the apparent similarity to Medusa’s head, which had venomous snakes in place of hair.
How can you distinguish a caput medusae from an inferior vena cava obstruction?
Caput Medusae is distinguished from inferior vena cava obstruction by determining the direction of flow in the veins below the umbilicus; it is towards the legs in the former, and towards the head in the latter (as abdominal collaterals develop to bypass the blocked inferior vena cava and permit venous return from the …
What causes portal hypertension?
Portal hypertension is a term used to describe elevated pressures in the portal venous system (a major vein that leads to the liver). Portal hypertension may be caused by intrinsic liver disease, obstruction, or structural changes that result in increased portal venous flow or increased hepatic resistance.
What causes spider veins on abdomen?
Spider veins are caused when fat builds up in the liver from fatty liver disease, and blood flows sluggishly or clots, which impacts blood pressure. Non-alcoholic fatty liver disease (NAFLD) is the term for a range of conditions caused by a build-up of fat in the liver.
What happens during portal hypertension?
When you have portal hypertension, this increased pressure makes it harder for blood to flow normally through the portal vein. Blood is redirected away from (bypasses) the liver. The body forms new vessels for the blood to flow through, especially to the esophagus and stomach. These veins become enlarged and twisted.
Is caput medusae reversible?
If caput medusa is due to a blockage in your inferior vena cava, you’ll likely need emergency surgery to fix the blockage and prevent other complications.
Why does liver disease cause spider naevi?
Individuals with significant liver disease also show many spider angiomas, as their liver cannot metabolize circulating estrogens, specifically estrone, which derives from the androgen androstenedione.
What is the difference between caput succedaneum and cephalohematoma?
Caput succedaneum is similar to cephalohematoma as both involve unusual bumps or swelling on the newborn’s head. However, the main difference is that lumps caused by bleeding under the scalp is cephalohematoma, whereas lumps caused by scalp swelling due to pressure is known as caput succedaneum.
What is the pathophysiology of portal hypertension?
Portal hypertension is characterized by a pathologic increase in portal venous pressure that leads to the formation of an extensive network of portosystemic collaterals that divert a large fraction of portal blood to the systemic circulation, bypassing the liver.
What is the difference between telangiectasia and spider naevi?
Spider angioma, also known as spider naevus or spider telangiectasia, is a vascular lesion characterized by anomalous dilatation of end vasculature found just beneath the skin surface. The lesion contains a central, red spot and reddish extensions which radiate outward like a spider’s web.
What causes spider Angiomata?
Enlarged (dilated) blood vessels cause spider angiomas to appear on your skin. Blood vessels dilate when your muscles restrict the blood flow in the arteriole, which is a small tube that branches off of your arteries (a major blood vessel) and leads to capillaries (a small, thin blood vessel).
How can you tell the difference between caput succedaneum and Subgaleal hemorrhage?
Palpation of a large caput succedaneum reveals firm, nonpitting swelling. In contrast, the cranial swelling of subgaleal bleeding is boggy due to the palpation of clotted blood just beneath the epicranial aponeurosis (Fig. 2.22).