Snapshot A 56-year-old woman presents to the physician with complaint of redness and itching in her left nipple. She says she has noticed that her areola has felt "rough and bumpy" and that there is occasional oozing of yellow pus from the skin around the nipple. Physical examination shows the finding seen in the image. The physician orders a mammogram and a punch biopsy of the skin around the nipple. Introduction Overview login to view 1 more bullet Epidemiology Incidence login to view 4 more bullets Demographics login to view 1 more bullet ETIOLOGY Pathophysiology login to view 2 more bullets Presentation Symptoms login to view 6 more bullets Physical exam login to view 1 more bullet Imaging Mammography login to view 5 more bullets Studies Scrape cytology login to view 3 more bullets Biopsy login to view 6 more bullets Differential Bowen disease login to view 2 more bullets Cutaneous melanoma login to view 2 more bullets Contact dermatitis login to view 2 more bullets Treatment Surgical login to view 3 more bullets Prognosis Dependent upon presence of the underlying invasive ductal carcinoma or axillary node metastases Paget disease of the breast that presents with a palpable mass is usually associated with a worse prognosis than cases without a palpable mass login to view 2 more bullets