Histiocytic Sarcoma of the Eyelid: An Uncommon Presentation of a Rare Neoplasm

The authors aim to highlight the rare occurrence of histiocytic sarcoma presenting in the eyelid, as it is typically found in other extranodal sites. They present a case of an 80-year-old man with a rapidly growing eyelid lesion, diagnosed through biopsy, and successfully treated with complete excision, followed by a monitoring strategy that showed no recurrence after two years. This case adds to the limited literature on eyelid histiocytic sarcoma and underscores the importance of recognizing this unusual presentation.