Abstract
Objective : We reviewed the status of magnetic resonance imaging (MRI) guided biopsy in Japan, evaluating its clinical importance.
Methods : We retrospectively reviewed the cases of 40 consecutive subjects undergoing MRI-guided 11-gauge vacuum-assisted biopsy (VAB). Biopsies conducted with a 1.5 T MRI scanner using a commercially available biopsy system detected lesions not found by mammography or second-look ultrasonography. This study was approved by ahospital institutional review board.
Results : Biopsies had no serious side effects in subjects. In one case, atypical ductal hyperplasia in VAB was upgraded to ductal carcinoma in situ (DCIS) after the surgically excised specimen was examined pathologically. Definitive histopathological findings were invasive ductal carcinoma in 2 subjects, DCIS in 10, combined lobular and ductal carcinoma in situ in one, and benign lesions in 27.
Conclusion : MR-guided VAB and MR-pathological correlations can improved the histological understanding of breast cancer detectable only by this technique.
