A Case of Primary Aggressive Non Hodgkin’s Lymphoma of Parotid Gland

Abstract

Introduction: Primary parotid Non Hodgkin lymphoma is rare and is generally overlooked in differential diagnosis. A high index of suspicion is therefore warranted for the diagnosis. In the present case report, we describe a case of high grade diffuse large B cell Non-Hodgkin's lymphoma of the parotid gland.Case presentation: A 24 Years old Male presented with a painless mass over the Left parotid region. Imaging studies were suggestive of an infiltrative mass lesion in left parotid along with lytic lesions in vertebral bodies of dorsolumbar spine. The patient underwent total parotidectomy of left Parotid gland with facial nerve preservation. Histopathology of the resected specimen was consistent with primary diffuse large B cell lymphoma of the parotid gland. Conclusion:Lymphomas arising from the parotid gland are an uncommon entity, said to account for only 0.6-5% of tumors or tumor-like lesions of the parotid, and are therefore commonly overlooked. This misdiagnosis often leads to unnecessary diagnostic procedures, delaying the initiation of proper treatment.