SPOTTERS MEDICNIE
CAPUT MEDUSAE
🔹 Definition:
Caput medusae refers to the dilated, tortuous veins radiating from the
umbilicus, resembling the snakes on Medusa’s head, caused by portal
hypertension leading to recanalization of the umbilical vein.
🔹 Pathophysiology:
- In
portal hypertension (e.g., cirrhosis), blood flow through the liver is
obstructed
- Collateral
circulation forms via the paraumbilical veins, which reconnect with superficial
epigastric veins
- This
results in prominent veins around the umbilicus
🔹 Appearance:
- Radial
pattern of engorged veins around the umbilicus
- Veins
are visibly pulsating or distended
- Best
seen when patient is upright or doing Valsalva
🔹 Associated Conditions:
- Cirrhosis
of liver (most
common)
- Budd-Chiari
syndrome
- Portal
vein thrombosis
- Hepatic
schistosomiasis
- Congenital
liver fibrosis
🔹 Differential Diagnosis:
|
Feature |
Caput Medusae |
IVC Obstruction |
|
Direction of flow |
Away from umbilicus |
Toward the heart (upward) |
|
Cause |
Portal hypertension |
IVC obstruction |
|
Associated signs |
Ascites, jaundice, splenomegaly |
Leg edema, dilated abdominal veins |
🔹 Clinical Significance:
- Indicator
of advanced portal hypertension
- May
coexist with:
- Ascites
- Splenomegaly
- Esophageal
varices
- Jaundice
🔹 Diagnosis:
- Clinical
examination –
visible abdominal veins, direction of blood flow
- Ultrasound
with Doppler –
assess portal vein flow
- Liver
function tests (LFTs)
- Endoscopy – check for esophageal varices
- CT
/ MRI abdomen –
for liver and portal system evaluation
🔹 Treatment:
- Treat
underlying portal hypertension:
- Salt
restriction, diuretics (for ascites)
- Non-selective
beta-blockers (e.g., propranolol)
- Endoscopic
variceal ligation for bleeding varices
- TIPS (Transjugular Intrahepatic
Portosystemic Shunt) in refractory cases
- Liver
transplantation
in end-stage liver disease
🔹 Prognosis:
- Caput
medusae is a marker of poor liver function and significant portal
hypertension
- Prognosis
depends on severity of liver disease and complications like
bleeding or encephalopathy
DR.C.GANESAN M.D.
PROFESSOR OF MEDICINE
No comments:
Post a Comment