[A rare case of cancer en cuirasse in an untreated breast carcinoma of 24 year's duration].

This 70 year old patient presented with a 24 year history of untreated breast cancer (histology: carcinoma solidum simplex) that had developed to a cancer "en cuirasse" with disturbances in both breast glands, carcinomatous infiltration of the barrel-shaped deformed thorax and superficial bleeding from a large area of ulcerated tissue. Until this time no definate distant metastases had been confirmed in the lungs, liver or bony skeleton. The point of interest here is the striking improvement obtained from local symptomatic treatment, with regeneration of skin over previous ulcerating and necrotic areas.