Nonpalpable Breast Cancer: Percutaneous Diagnosis with 11- and 8-gauge Stereotactic Vacuum-assisted Biopsy Devices

Abstract

This study demonstrated no difference in breast cancer diagnosis with the 8- and 11-gauge SVAB systems, but the accuracy of breast cancer diagnosis was greater in lesions smaller than 30 mm than in larger lesions.

Predictive factors for invasive cancer in surgical specimens following an initial diagnosis of ductal carcinoma in situ after stereotactic vacuum-assisted breast biopsy in microcalcification-only lesions

“…Although SVAB allows more accurate histopathologic results, underestimation still occurs (7,10,18). Some investigators have found rates of underestimation ranging from 5% to 29% for DCIS at SVAB (6,9,(11)(12)(13). In this study, the underestimation rate of DCIS was 18%.…”

“…However Laurenco et al (13) found a statistically significant relation between the increasing size and underestimation rates. Brem et al (6) found the underestimation rates to be significantly higher in lesions 30 mm or larger. Orsaria et al (16) reported that lesions larger than 40 mm have a greater probability of having invasive components than others.…”

“…Underestimation of DCIS lesions occurs when an invasive component is found after surgery, which had been missed at the initial preoperative sampling. The underestimation rate of stereotactic 14-gauge automated core biopsy in DCIS was reported as 16%-35% (9-11), while that of SVAB was 5%-29% (6,9,(11)(12)(13).…”

“…The cutoff values for lesion sizes (30 mm and 40 mm) were obtained from previous publications (6,16). In order to find the cut-…”

“…In most breast units, stereotactic 14-gauge automated core biopsy has been replaced by stereotactic vacuum-assisted biopsy (SVAB) using 8-to 11-gauge needles (6). Large core SVAB allows larger samples to be obtained in a shorter period of time compared with samples obtained using automated core biopsy devices (7).…”