Giant extraocular sebaceous carcinoma: case report and a brief review of a literature.

Extraocular sebaceous carcinoma (ESC) is a rare, aggressive malignant tumor that originates from the adnexal epithelium of the sebaceous gland. We present herein one of the largest cases reported in the literature until now. We also review briefly the relevant aspects including clinical presentation, differential diagnosis, histopathological features, inmunohistochemical profile, and therapeutic options.