Pseudocirrhosis in Chronic Budd Chiari Syndrome With Janus Tyrosine Kinase 2 (JAK2) Mutation.

Budd-Chiari syndrome (BCS) occurs when there is hepatic venous outflow obstruction. Chronic BCS may result in liver cirrhosis due to long-standing obstruction and tend to present late. We present the first case of BCS secondary to Janus tyrosine kinase 2 (JAK2) mutation resulting in "pseudocirrhosis" rather than cirrhosis of the liver.