What causes portal vein blockage and portal hypertension?

Question

Hi doctor,

I am a 30-year-old male presenting with back pain. The ultrasound show enlarged spleen 16 cm with a conclusion of cavernous transformation of the portal vein, with portal hypertension.

The endoscopy shows:

Oesophageal varices grade 1.
Large isolated fundal varices.

I have been taking Propranolol and Furosemide for the past three weeks, but I have had severe constipation and an anal fissure, and am taking Bisacodyl for it. Still, the doctor has no idea what closed the portal vein. No history of travel, does not smoke or drink much; normal complete blood count and liver function tests.

Please help.

Thanks.

Answer 1

Hi,

Welcome to icliniq.com.

I can understand your concern.

I am deeply concerned about your worries. Based on the information provided, this patient has cavernous transformation of the portal vein (CTPV) with portal hypertension.

The ultrasound shows splenomegaly, prominent mesenteric veins, and portal hypertension. Endoscopy showed grade 1 oesophageal varices and large isolated fundal varices. You are using Propranolol (for portal hypertension), Furosemide, and Spironolactone (for fluid management).

Constipation, anal fissure, and cavernous transformation of the portal vein usually occur after chronic portal vein thrombosis. It represents collateral veins forming around an obstructed portal vein to maintain portal flow.

Potential causes of portal vein thrombosis (PVT) include:

Prothrombotic conditions (inherited or acquired thrombophilia).
Local factors such as prior abdominal infection, inflammation, pancreatitis, and surgery.
Cirrhosis or liver disease (though liver function tests are mostly normal).

Current management will focus on the following:

Propranolol is appropriate for preventing variceal bleeding.
Managing fluid overload with the help of Furosemide and Spironolactone.
Stool softeners (though care is needed with laxatives if varices are present).

I suggest the following steps for the condition:

Thrombophilia workup (protein C/S deficiency, antithrombin III, Factor V Leiden, prothrombin mutation, and antiphospholipid antibodies.
Imaging with CT (computed tomography) or MRI (magnetic resonance imaging) venography to assess the portal vein and collaterals in detail.
Avoid constipation and straining to reduce the risk of variceal bleeding.

I hope this information will help you.

Thanks.