RT Journal A1 DUNPHY JE T1 SUrgical importance of mammary and subcutaneous fat necrosis JF Archives of Surgery JO Archives of Surgery YR 1939 FD January 1 VO 38 IS 1 SP 1 OP 5 DO 10.1001/archsurg.1939.01200070004001 UL http://dx.doi.org/10.1001/archsurg.1939.01200070004001 AB A thorough knowledge of the pathogenesis and clinical manifestations of fat necrosis is of considerable surgical importance because all too frequently the similarity of this condition to cancer has led to ill advised surgical intervention or irradiation therapy. This is particularly true of fat necrosis in the breast, despite the accurate description of this condition as a clinical entity over a decade ago.1 However, fat necrosis may prove to be equally baffling or even more so when it occurs in a mastectomy scar, in a lipoma, in a hernial sac or deep in the subcutaneous tissues of the thigh or the buttock. It is the purpose of the present paper to call attention once again to the inherent difficulties in recognizing this condition and to emphasize its importance in the differential diagnosis of malignant lesions in the breast or of the superficial tissues.One of the earliest descriptions of