Fig. 2From: Natural course of fat necrosis after breast reconstruction: a 10-year follow-up studyUltrasonographic findings of fat necrosis after breast reconstruction. a, b A simple or fat-containing complex cyst is a typical ultrasonographic finding of fat necrosis. c, d Sometimes the fat necrosis mimics tumor recurrence in ultrasonography as a hypoechoic nodule with irregular margins. In these cases, pathologic confirmation is necessary to distinguish it from tumor recurrenceBack to article page