A 49-year-old woman from India presented with a 1-month history of a fungating, ulcerated, bleeding mass involving her entire left nipple (Figure). She had no prior breast pathological findings, surgery, radiation exposure, or trauma. There was no abnormality of the right breast. There was no palpable supraclavicular, infraclavicular, or axillary lymphadenopathy. A bilateral mammogram was obtained, which revealed increased density at the 5-o’clock position of the left breast with skin thickening and prominence of the nipple-areola complex. There were coarse benign-appearing calcifications throughout the left breast. The right breast contained scattered fibroglandular elements. Ultrasonography of the left breast demonstrated diffuse edematous changes. An incisional biopsy of the nipple demonstrated pseudoepitheliomatous hyperplasia and squamous metaplasia of the lactiferous ducts with severe cytologic atypia.