MRT-gestützte Intervention der Brust bei Patientinnen mit einem histologisch gesicherten Mammakarzinom

Purpose: To investigate the clinical value of magnetic resonance imaging-guided interventions in women with a personal history of breast cancer. Material und Methods: A retrospective review was performed in 39 consecutive women. A total of 60 lesions were referred for MR-guided intervention. Standardized MR examinations (1.0Tesla, T1-weighted 3D FLASH, 0.15 mmol Gd-DTPA/kg body weight) were performed using a dedicated system which allows vacuum-assisted breast biopsy or wire localization. Results: Histologic findings in 53 procedures revealed seven invasive carcinomas, seven ductal carcinomas in situ, one lobular carcinoma in situ and one atypical ductal hyperplasia. Thirty seven benign histologic results were verified by the MR-guided intervention, by retrospective correlation of imaging and histology and by subsequent follow-up. In another seven cases the indication was dropped, since the enhancing lesion was no longer visible. Absent enhancement was confirmed by short-term re-imaging of the noncompressed breast and by follow-up. Conclusion: MR-guided biopsy is a safe procedure for the work-up ofMR-detected lesions. The correlation of imaging and histology is important.