S5845 Rapidly Progressive Vanishing Bile Duct Syndrome in Classical Hodgkin Lymphoma

Introduction: Vanishing bile duct syndrome (VBDS) is a severe condition characterized by progressive loss of intrahepatic bile ducts resulting in cholestatic liver injury and possible liver failure. Although VBDS may result from drug reactions, infections, and autoimmune diseases, its association with lymphoproliferative disorders comes with particular diagnostic and management challenges. In patients with Hodgkin lymphoma (HL), VBDS may present as a paraneoplastic phenomenon or develop as a consequence of therapy; however, early recognition is important as the condition is likely to progress rapidly despite intervention. Case Description/Methods: A 31-year-old previously healthy man presented with 4 months of progressive left cervical lymphadenopathy and 10-day history of diffuse abdominal pain. Labs revealed cholestatic pattern of liver injury. Cervical lymph node biopsy confirmed classic Hodgkin lymphoma of nodular sclerosis type. MRCP revealed a patent biliary tree. Initial liver tests included an elevated international normalized ratio 1.6, aspartate aminotransferase 214, alanine aminotransferase 182, total bilirubin 18, and alkaline phosphatase 403 which worsened with progressive cholestasis despite initiation of chemotherapy including cyclophosphamide and dexamethasone. Liver biopsy revealed ductopenia over 50% of portal tracts, consistent with VBDS. No histologic evidence of direct lymphomatous invasion or other causes of liver injury, such as viral hepatitis or autoimmune processes, were found on work up. Due to rapid deterioration and limited response to standard lymphoma therapy, the patient was transferred for liver transplant evaluation. Discussion: Vanishing bile duct syndrome is a difficult diagnosis necessitating liver biopsy to confirm the absence of bile ducts. This condition can be linked to Hodgkin lymphoma, where it may appear as a paraneoplastic syndrome. Pathophysiology is complex, involving autoimmune, inflammatory, and regenerative factors which play a role in bile duct destruction though precise mechanisms are unclear. Treatment with corticosteroids and ursodeoxycholic acid may reduce inflammation and stimulate bile secretion, preventing apoptosis of cholangiocytes. Liver transplantation is reserved for advanced or refractory cases. When VBDS is associated with HL, treating the lymphoma may lead to improvement in some patients. This rare disease and its variable presentation contribute to ongoing difficulties in early diagnosis and effective management.