In portal hypertension the sites of portosystemic anastomosis includes –
**Core Concept**
Portosystemic anastomosis refers to the communication between the portal circulation and the systemic circulation, which can occur due to increased pressure in the portal vein. This condition, known as portal hypertension, can lead to the formation of collateral circulation to bypass the obstruction, resulting in the development of portosystemic anastomoses.
**Why the Correct Answer is Right**
The main sites of portosystemic anastomosis include the esophageal varices (at the gastroesophageal junction), gastric varices (in the fundus and body of the stomach), and splenorenal shunts (between the splenic vein and the left renal vein). These anastomoses are formed due to the increased pressure in the portal vein, which leads to the dilation of the veins and the formation of collateral circulation. The liver's inability to regulate blood flow and pressure in the portal system results in the formation of these portosystemic anastomoses.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect as it does not specify a known site of portosystemic anastomosis.
* **Option B:** This option is incorrect as it is not a recognized site of portosystemic anastomosis in portal hypertension.
* **Option C:** This option is incorrect as it does not accurately describe a known site of portosystemic anastomosis.
**Clinical Pearl / High-Yield Fact**
It is essential to recognize the sites of portosystemic anastomosis in patients with portal hypertension to diagnose and manage complications such as variceal bleeding and ascites.
**Correct Answer: C. Splenorenal shunts.