case summaryThe patient was a hitherto fit and well 57-year-old Chinese woman with a history of a pigmented plaque over her nipple and areola for 12 months, which had been slowly increasing in size. Physical examination, including breast examination, was unremarkable except for an area of hyperpigmentation in the nipple region, which was completely excised following initial biopsy.
histopathologyThe biopsy and resection specimens demonstrated similar histological features. Sections showed an intra-epidermal proliferation of large atypical tumour cells, with round or oval nuclei and prominent nucleoli arranged either as solitary units or as nests along and A B