Idiopathic portal hypertension

Definition:

Idiopathic portal hypertension (IPH) is a disorder generally classified as a noncirrhotic portal hypertension of unknown etiology, and is clinically characterized by portal hypertension, splenomegaly, and pancytopenia. The principal pathologic changes of IPH are devastation of the intrahepatic terminal portal radicles with considerable portal fibrosis and secondary atrophy of the liver parenchyma that follows portal thrombosis. The incidence varies considerably with the country. In contrast to its high prevalence in India, IPH is comparatively a rare disorder in Western countries. Middle-aged women are more prone to IPH in Japan. IPH usually suggests a benign prognosis, but sometimes is complicated with severe hemorrhage due to ruptured esophageal varices, or massive splenomegaly. It is mainly managed by supportive treatment such as endoscopic, radiological and/or surgical management for esophageal varices and/or splenomegaly. The definite etiology of IPH is still uncertain, but there are several theories on the potential pathogenesis of IPH. These theories include immunological disorders, infections, and genetic variants.

References:

[1]. Masahiko Okudaira, et al. Idiopathic portal hypertension and its pathology. Semin Liver Dis. 2002 Feb;22(1):59-72. [Content Brief]

[2]. Tomohiro Tanaka, et al. The current clinical aspects of idiopathic portal hypertension. Intractable Rare Dis Res. 2013 Aug;2(3):94-7. [Content Brief]

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