Two Cases of Intraductal Papilloma with Sebaceous Metaplasia of the Breast

INTRODUCTION: Intraductal papilloma is a common benign breast lesion that typically presents with nipple discharge or a palpable mass. While apocrine metaplasia is frequently observed, sebaceous metaplasia is very rare in breast lesions, with only a few cases reported to date. We herein describe two surgically resected cases of intraductal papilloma with sebaceous metaplasia, both of which were histologically proven benign following imaging findings that were suspicious for malignancy.