Benign chondrolipomatous tumour of the breast

Two patients with benign chondrolipomatous tumours of the breast were subjected to mammography. In one case this was as part of the investigation of a breast lump detected clinically, while in the other the lesion was detected during routine follow-up of a woman with long-standing cystic hyperplasia. The mammographic appearances were similar in the two cases and were unusual, each lesion showing as a circumscribed lobulate area of radiolucency containing tiny dense flecks of opacification. Mammographic and pathological findings are presented and the significance of the diagnosis discussed. Benign chondrolipomatous tumours of the breast are rare but with increase in mammography it is possible that they will present more frequently than hitherto.