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Atlas of breast cancer early detection

Breast imaging – Breast ultrasound – Ultrasound lexicon – Special cases – Fat necrosis


Fat necrosis develops spontaneously or as a consequence of breast trauma, surgery, biopsy, or radiotherapy. The acute stage shows disrupted fatty tissue with haemorrhage and inflammatory reaction. Over time, underlying inflammatory response changes occur; stromal fibrosis and calcification may become noticeable and a clinically palpable lump may develop at the site of fat necrosis. Pseudo mass formation may be visible on ultrasound as a circumscribed fat-containing lesion with thin walls. Calcifications with lucent centres are seen .


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