PURPOSE: To classify lesions initially considered nonmalignant at large-needle core biopsy that were subsequently surgically excised or sampled at repeat biopsy. MATERIALS AND METHODS: From August 1, 1991, to December 31, 1996, 1,032 @entity1558 (214 malignant and 818 nonmalignant lesions) were sampled at large-needle core biopsy. Of the nonmalignant lesions, 112 (14%) abnormalities were studied. Twenty-four abnormalities were subsequently excised because of discordant imaging and pathologic findings; 41 may have been missed at biopsy (25 were surgically excised, and 16 were sampled at repeat biopsy); 40 were surgically excised as recommended by the pathologist; and seven were excised for other indications. RESULTS: None of 24 abnormalities excised because of discordant findings was malignant. Among the 41 possibly missed lesions, infiltrating @entity513 was found in one lesion that was removed surgically and in one sampled at repeat biopsy. Among the 40 lesions recommended for excision by the pathologist, 16 @entity5 were found ( @entity513 in situ, 11; infiltrating @entity513 , three; @entity5 , two). None of the remaining seven lesions was malignant. CONCLUSION: Correlation of the technical quality of the biopsy, imaging features, and pathologic findings resulted in 96 surgical excisions and 16 repeat biopsies of lesions initially considered nonmalignant. Eighteen additional @entity5 were identified.

Large-needle core biopsy: nonmalignant XXXX evaluated with surgical excision or repeat core biopsy.

@entity513 :: ('MESH:D044584', 'Disease') :: ['ductal carcinoma'] @entity5 :: ('MESH:D009369', 'Disease') :: ['phyllodes tumor', 'malignancies'] @entity1558 :: ('MESH:D001941', 'Disease') :: ['breast abnormalities']
@entity1558 :: (MESH:D001941,Disease) :: ['breast abnormalities']
