Primary Non-Hodgkin’s Lymphoma of liver is an extremely rare case. We describe a case 21-year old female who presented with right groin pain, no hepatosplenomegaly, weight loss, night sweats or lymphadenopathy with elevated lactate dehydrogenase. She had mildly enhancing hypodense mass at porta hepatis as observed on contrast enhanced CT (CECT) scan of whole abdomen (CECT. FNAC, biopsy and ultimately immunohistochemistry revealed high-grade B cell non-Hodgkin's lymphoma. She was treated with chemotherapy by CHOP schedule and followed up for a period of five years. During that period, she was found well, and no lesion was observed in liver on CECT of whole abdomen. The patient was successfully treated. She overcame the 5-year survival rate and is still alive without any complaints. We conclude her treatment was successful, although her presentation was unusual.