Lobular Breast Carcinoma Presenting as an Endometrial Polyp Metastasis: A Report of a Novel Asynchronous Presentation

Uterine metastases from breast carcinoma are rare. We describe an unusual case of occult metastatic lobular carcinoma incidentally identified within an endometrial polyp in a woman with post-menopausal bleeding. She had no prior history of breast malignancy with no primary mass identified during initial workup. Despite thorough investigation, no primary tumor was detected until two years later. This case highlights an atypical asynchronous presentation of metastatic breast carcinoma and emphasizes the importance of maintaining awareness as well as maintaining vigilant long-term clinical follow up in cases of abnormal metastatic patterns.