A rare case of eyelid porocarcinoma.

Carcinoma of the eyelids forms 5%-10% of all skin carcinomas. Porocarcinoma is the malignancy of eccrine sweat glands, mostly seen in the extremities. Only eight cases of this tumor in the eyelid have been reported to date. Eyelid adnexal tumors such as porocarcinoma are quite rare. A 70-year-old male presented with a painless nodule-ulcerative growth in the left lower eyelid for the past 2 years. The mass was 2.7 cm by 3 cm in dimensions and involved the tarsal plate. Incision biopsy gave a histopathological picture similar to a benign adnexal tumor, poroma. Complete excision was done, and the defect was reconstructed with a Tenzel flap. Histopathological analysis of the excised mass showed a malignant tumor arising from sweat glands with epidermal cells arranged in broad anastomotic bands, extending into the dermis, having ductal lamina and cystic components with comedo necrosis and keratinization. A diagnosis of eccrine porocarcinoma of the eyelid was made, and the tumor was staged as T3cN0M0. A whole-body positron emission tomography-computed tomography scan was negative for metastasis. The patient was healthy at 1 year of follow-up without any recurrence.