SEBACEOMA : A RARE CASE REPORT CLINICALLY DIAGNOSED AS PLEOMORPHIC ADENOMA.

ABSTRACT

Sebaceoma is a benign tumour of epidermal appendages with sebaceous differentiation also known as sebaceous epithelioma .We report a case of a 31 year old male presented with an exophytic mass on the posterior side of right ear lobule. Histopathology revealed rippled pattern sebeceoma comprising of cells arranged in sheets, cohesive nests and islands mostly comprising of basaloid cells (>50%)with mature sebocytes interspersed in between. The sebocytes appeared as clear cells , some cells multivacuolated with central indented nuclei. The rippled pattern sebeceoma is a histological variant and is seen predominantly in males in the head, neck and face region.The immunohistochemistry markers Epithelial Membrane Antigen (EMA) was focally positive along with Pan-Cytokeratin being strongly positive and diffuse which were con?rmatory for the disgnosis.