Idiopathic portal hypertension (IPH)

Masson's trichrome stain of a liver biopsy specimen in a patient with IPH showing portal tract fibrosis and mild chronic inflammation. There is no visible portal vein radicle. Some dilated aberrant vascular structures can be seen (black arrows) at the periphery of the portal tract. A relatively small bile duct (BD: blue arrow) and hepatic artery (HA: red arrow) are visible in the portal triad.