Squamous carcinoma of the breast.
Two cases of primary squamous carcinoma of the breast are described. One of the tumours appeared to have an origin in an epidermoid cyst and had a pseudosarcomatous stroma. The other tumour arose from metaplastic ductal epithelium. A review of the literature is given.
D001943:Breast Neoplasms / Q000473:pathology*; D002294:Carcinoma, Squamous Cell / Q000473:pathology*; D004814:Epidermal Cyst / Q000473:pathology; D005260:Female; D006801:Humans; D008875:Middle Aged