Abstract

Sebaceous carcinoma is a rare malignancy typically associated with the ocular region, particularly the eyelid. However, in this case report, we present an unusual occurrence of sebaceous carcinoma manifesting outside the eye in a manner that closely resembles primary ectopic breast cancer. The patient, a 79-year-old female, presented with [specific clinical features], leading to the discovery of a sebaceous carcinoma in an unexpected anatomical location. This case challenges traditional expectations of sebaceous carcinoma localization and highlights the importance of considering diverse differential diagnoses in unusual clinical presentations. We discuss the clinical, histological, and immunohistochemical features of this atypical sebaceous carcinoma and draw comparisons with primary ectopic breast cancer to underscore the diagnostic complexities associated with rare malignancies.