Table 9.
Final histopathologic diagnosis, including all instances in which subsequent diagnostic removal of tissue from the same anatomical site of the affected breast was performed in an immediate fashion or in a delayed fashion.
| 8-gauge | 14-gauge | All cases | |
|---|---|---|---|
| Total number of cases | 724 | 719 | 1443 |
| Carcinomas# | 148 (20.4%) | 386 (53.7%) | 534 (37.0%) |
| High risk breast lesions# | 15 (2.1%) | 5 (0.7%) | 20 (1.4%) |
| Fibroadenomas | 238 (32.9%) | 151 (21.0%) | 389 (27.0%) |
| Benign breast changes/conditions† | 261 (36.0%) | 138 (19.2%) | 399 (27.7%) |
| Intraductal papillomas | 42 (5.8%) | 6 (0.8%) | 48 (3.3%) |
| Indeterminate fibroepithelial breast lesions | 0 (0%) | 0 (0%) | 0 (0%) |
| Benign phyllodes tumors | 2 (0.3%) | 4 (0.6%) | 6 (0.4%) |
| Malignant phyllodes tumors | 0 (0%) | 1 (0.1%) | 1 (0.1%) |
| Lymphomas/leukemias | 4 (0.6%) | 7 (1.0%) | 11 (0.8%) |
| Benign lymphoid tissue | 13 (1.8%) | 20 (2.8%) | 33 (2.3%) |
| Desmoids/fibromatosis | 1 (0.1%) | 1 (0.1%) | 2 (0.1%) |
# carcinomas included invasive carcinoma and ductal carcinoma in situ.
* 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.