PRIMARY NON-HODGKIN LYMPHOMA OF LIVER: AN UNUSUAL PRESENTATION AND REVIEW OF ITS MANAGEMENT.

 Primary Non-Hodgkin lymphoma (NHL) of liver is a very rare malignancy. Here, we report a case of 26 years old man who presented with right upper abdomen pain and lump, reduced appetite and progressive weakness of 4 month’s duration. Liver functions were deranged but serology was negative for viral markers and α Fetoprotein was within normal range. Ultrasonography and Computed Tomography scan of the abdomen revealed large nodule in right lobe of the liver. USG guided biopsy of liver mass and fluorescence in situ hybridization for CD markers established diagnosis of primary NHL of liver. Extensive investigations including X-ray of chest, whole-body positron-emission tomography scan and bone marrow biopsy showed no involve­ment of mediastinum, spleen, bone marrow or any other organ or lymph nodes significantly. Having B symptoms disease was staged IV_B, the patient has been treated with 6 cycles of R-CHOP regimen (Rituximab/Cyclophosphamide–Doxorubicin–Vincristine–Prednisolone) followed by 2 courses of CHOP every three weekly. Response has been excellent and patient is asymptomatic as of now. This case highlights that primary hepatic lymphoma should be considered in the differential diagnosis of space-occupying liver lesions in presence of normal levels of alpha-fetoprotein.