Trichilemmal Carcinoma of the Thigh

Trichilemmal carcinoma is a rare malignant tumor originating from the outer root sheath of the hair follicle, characterized by keratinization without a granular layer. A case of a 71-year-old male with a thigh tumor was reported, where surgical excision confirmed the diagnosis and achieved clear margins, indicating complete resection. The tumor typically follows a benign course with rare recurrence post-resection, but metastases may require chemotherapy. The article emphasizes the need for close post-surgery follow-up due to recurrence risks and highlights the challenge of standardizing treatment due to limited cases and unclear chemotherapy guidelines for metastases.