Abstract: Sebaceous carcinoma is a rare and aggressive skin malignancy, most commonly affecting the head and neck, especially the upper eyelid. Sebaceous carcinoma in the minor salivary glands is relatively rare. This paper presents a case of buccal sebaceous carcinoma with submental island flap repair, aiming to provide clinicians with a comprehensive and practical reference for diagnosis and treatment, and to help gain an in-depth understanding of the diagnostic methods and treatment of sebaceous carcinoma.

Key words: sebaceous carcinoma, minor salivary gland, submental island flap