Pathological Portrait of a Submandibular Gland Lymphoepithelial Cyst in a Non HIV Patient: A Case Report

Abstract

Lymphoepithelial Cysts (LEC) manifest as benign, unilocular to multilocular lesions predominantly in the head and neck areas. LEC typically localise in the salivary glands, with the parotid gland being more common and the submandibular gland being a rare occurrence. Additionally, they may be observed in the oral cavity, with a particular affinity for the floor of the mouth. It manifests as a painless, solitary cystic mass situated close to or within the salivary gland. It predominantly occurs in individuals infected with Human Immunodeficiency Virus (HIV). It typically arises as a consequence of lymphocyte-induced dilation of the cystic duct, and in accordance with index case, the definitive diagnosis is consistently confirmed through postoperative histopathological examination. They are infrequently observed in immunocompetent individuals and may have a connection to Sjögren’s syndrome. Numerous contemporary investigative methods are at our disposal, with Fine Needle Aspiration Cytology (FNAC) emerging as a swift diagnostic tool for promptly confirming a LEC. Additional diagnostic modalities encompass Ultrasonography (USG) and Computed Tomography (CT). The primary treatment for an LEC continues to be surgical intervention. Understanding the characteristics and behaviour of such cysts in non HIV patients is critical for accurate diagnosis, appropriate therapy, and, perhaps, enhancing the understanding of the spectrum of conditions associated with these cyst formations. Investigating LEC occurring in the rare location of the submandibular salivary gland, this work is distinctive in that it involves an immunocompetent individual. The present case is of a 42-year-old woman who elucidates the diagnostic pathway, encompassing both FNAC and histopathology.