[Palpebral seborrheic keratosis: a case study]. / Kératose séborrhéique palpébrale.

INTRODUCTION: Seborrheic keratosis is the most frequent palpebral tumor, observed for the most part in the second half of life. It may be confused clinically with a basal cell carcinoma or a melanoma. The histopathological study confirms the diagnosis. OBSERVATION: A 69-year-old man presented with a giant superior palpebral tumor leading to ptosis of the eyelid, which had evolved over 5 years. Examination found a pigmented cerebriform multilobed granulated mass, with a smooth surface and a more or less seborrheic aspect, pedicled in places, covering the entire eyelid but sparing the internal angle. This aspect suggested melanoma, basal cell carcinoma or seborrheic keratosis. Histological biopsy revealed basal cell carcinoma. Excision with palpebral reconstitution using palpebral flaps was performed. The histopathological analysis of the tumor concluded in seborrheic keratosis. DISCUSSION: Seborrheic keratosis is a frequent tumor of the face and eyelids. Its highly pigmented clinical aspect can be confounded with a nevus or a melanoma, whereas the histological aspect can suggest basal cell carcinoma or squamous cell carcinoma, but the basal membrane is always intact. Several treatments have been proposed, including electrocoagulation, cryotherapy, dermabrasion, as well as CO2 laser treatment. However, when there is doubt with regard to the histological nature, surgery is preferred. CONCLUSION: This was a case of seborrheic keratosis, atypical in that it covered the entire upper eyelid and produced a highly disfiguring aspect and functional problems, requiring surgical treatment with eyelid reconstruction.