Ultrasound-guided diagnostic breast biopsy methodology: retrospective comparison of the 8-gauge vacuum-assisted biopsy approach versus the spring-loaded 14-gauge core biopsy approach

Table 3 Histopathology from the breast biopsy core specimens harvested at the time of the original ultrasound-guided diagnostic breast biopsy procedure.

	8-gauge	14-gauge	All cases
Total number of cases	724	719	1443
Carcinomas^#	148 (20.4%)	377 (52.4%)	525 (36.4%)
High risk breast lesions^#	15 (2.1%)	6 (0.8%)	21 (1.5%)
Fibroadenomas	239 (33.0%)	147 (20.4%)	386 (26.7%)
Benign breast changes/conditions^†	261 (36.0%)	145 (20.2%)	406 (28.1%)
Intraductal papillomas	42 (5.8%)	6 (0.8%)	48 (3.3%)
Indeterminate fibroepithelial breast lesions	0 (0%)	8 (1.1%)	8 (0.6%)
Benign phyllodes tumors	1 (0.1%)	1 (0.1%)	2 (0.1%)
Malignant phyllodes tumors	0 (0%)	0 (0%)	0 (0%)
Lymphomas/leukemias	4 (0.6%)	7 (1.0%)	11 (0.8%)
Benign lymphoid tissue	13 (1.8%)	21 (2.9%)	34 (2.4%)
Desmoids/fibromatosis	1 (0.1%)	1 (0.1%)	2 (0.1%)

# carcinomas included invasive carcinoma and ductal carcinoma in situ (DCIS).
* high risk breast lesions included atypical ductal hyperplasia, atypical lobular hyperplasia, and lobular carcinoma in situ.
† benign breast changes/conditions included all of the following histopathologic terminologies issued in official pathology report from Department of Surgical Pathology: fibrocystic breast changes, ductal epithelial hyperplasia, sclerosing adenosis, stromal fibrosis, cyst-formation, ductal ectasia, fibrous mastopathy, lymphocytic mastopathy, diabetic mastopathy, columnar cell changes, fat necrosis, hemorrhage, scar-formation, gynecomastia, adenosis tumor, lactating adenoma, hamartoma, lipoma, myofibroblastoma, amyloidosis, benign granular cell tumor, epidermal inclusion cyst, or benign breast tissue with no pathologic changes.

ISSN: 1477-7819