Erosive lesion of the nipple: What is your diagnosis?

Erosive and oozing lesions of the nipple, especially when unilateral, should raise suspicion about malignant neoplasms. Herein we report a patient with typical clinical and histopathological features of erosive adenomatosis of the nipple (EAN). It is an uncommon, benign proliferative process of lactiferous ducts of the nipple. Clinically, EAN is characterized by erosion, serous discharge, edema, itching, and erythema of one of the nipples. Complete excision of the tumor yields excellent results. Although EAN is a rare disease, clinicians must be aware of this benign neoplasm in patients with erosive lesions of the nipple. The main concern is the need to rule out malignant proliferations in the differential diagnosis. Histology is the gold standard for diagnosis. The coexistence of nipple adenoma and breast cancer is well-reported in the literature. Thus, it is necessary to encourage patients with a history of EAN to maintain regular breast screening.