Non-Hodgkin's lymphoma of parotid gland camouflaging as sialadenitis: A case report

Abstract

Non-Hodgkin lymphomas (NHLs) commonly show extranodal involvement (20–30%). Primary diffuse large B-cell lymphomas (DLBCLs) with extranodal localization represent clinically and molecularly distinct entities. Here, we present a case of DLBCL affecting the parotid gland that initially seemed to be sialadenitis. The magnetic resonance Imaging (MRI) and positron emission tomography (PET) scans showed a neoplastic mass in the parotid gland and involvement of the spleen, respectively. The immunohistochemistry (IHC) confirmed the diagnosis of DLBCL. The patient was treated successfully with chemotherapy. A high degree of skepticism is involved in an early diagnosis of NHL as it can mimic benign and malignant entities.

Keywords

• early diagnosis
• immunohistochemistry
• non-hodgkin's lymphoma
• parotid gland
• r-chop
• sialadenitis