A Rare Case of a Diffuse Large B-Cell Lymphoma (DLBCL) arising From The Parotid Gland In a Patient With Sjogren’s Syndrome

Abstract

Primary lymphoma of the salivary gland is rare, with NHL being 5% of all extra nodal lymphomas and 2% of all salivary gland tumors. Most are low grade lymphomas with MALT lymphomas being the most common. DLBCL lymphomas are uncommon with most thought to be due to transformation from underlying low-grade lymphomas, postulated to arise in those with sialedinitis and Sjogren’s syndrome. We report a rare case of DLBCL in a patient on treatment for Sjogren’s Syndrome.