Non-cirrhotic portal hypertension.

Area of Science:

• Hepatology
• Vascular Medicine
• Gastroenterology

Background:

• Non-cirrhotic portal hypertension (NCPH) is a group of vascular disorders characterized by portal hypertension (PHT) but preserved liver function and normal hepatic venous pressure gradient (HVPG).
• NCPF/IPH and EHPVO are primary examples, often stemming from infections or prothrombotic states.
• Other conditions like hepatic schistosomiasis, congenital hepatic fibrosis, and nodular regenerative hyperplasia can also manifest as NCPH.

Purpose of the Study:

• To delineate the spectrum of non-cirrhotic portal hypertension disorders.
• To discuss the etiopathogenesis, clinical presentation, and management of NCPH.
• To compare the long-term prognosis of different NCPH subtypes.

Main Methods:

• Review of literature on non-cirrhotic portal hypertension.
• Analysis of etiological factors including infections and prothrombotic states.
• Description of clinical features such as variceal bleeding and splenomegaly.

Main Results:

• NCPF/IPH and EHPVO are prototype NCPH disorders with distinct prognoses.
• NCPF generally has a good long-term outlook.
• EHPVO may have a less favorable outcome due to portal biliopathy and parenchymal changes.

Conclusions:

• NCPH encompasses diverse conditions with shared features of PHT and preserved liver function.
• Management focuses on controlling variceal bleeding and PHT complications.
• Understanding the specific NCPH subtype is crucial for predicting prognosis and guiding treatment.