CE-Magnetic Resonance Mammography for the evaluation of the contralateral breast in patients with diagnosed breast cancer.
OBJECTIVE
To evaluate the role of contrast-enhanced Magnetic Resonance Mammography (MRM) in the evaluation of the contralateral breast in patients with recently diagnosed breast cancer.


METHODS
Fifty patients with proved unilateral breast cancer, with a negative contralateral breast at physical examination, ultrasound and mammography, were studied with a 1.5 T magnet (Siemens, Vision Plus, Germany). A bilateral breast surface coil was used. Dynamic 3D Flash T1-weighted sequences were acquired in the axial plane before and 0, 2, 4, 6 and 8 minutes after the administration of 0.1 mmol/kg of Gd-BOPTA at a flow rate of 2 ml/s followed by 10 ml of saline. The level of suspicion was reported on a scale from 0 to 5 following the BI-RADS classification, based on lesion morphology and kinetic features. The results were compared with the histological findings after biopsy or surgery.


RESULTS
Fourteen out of 50 patients (28%) had contralateral lesions identified on MRM. Biopsy was performed in four of them for suspicious lesions (BI-RADS 4) while 10 patients underwent surgery because of highly suggestive malignant lesions (BI-RADS 5). Histology diagnosed three fibroadenomas, 5 ductal carcinomas in situ, 2 lobular carcinomas in situ, 3 invasive ductal carcinomas and 1 invasive lobular carcinoma. Contrast-enhanced MRM yielded no false negative and three false positives.


CONCLUSIONS
Our results demonstrate a very good accuracy of Magnetic Resonance Mammography in the detection of synchronous contralateral cancer in patients with newly diagnosed breast cancer. Therefore, contrast-enhanced MRM could be introduced to screen patients with proven breast cancer before they undergo surgery.
Pediconi
Federica
F
Dipartimento di Scienze Radiologiche, Università degli Studi di Roma La Sapienza, Rome. Federica.Pediconi@uniroma1.it
Venditti
Fiammetta
F
Padula
Simona
S
Roselli
Antonella
A
Moriconi
Enrica
E
Giacomelli
Laura
L
Catalano
Carlo
C
Passariello
Roberto
R
D000328:Adult; D000368:Aged; D001706:Biopsy; D001940:Breast / Q000473:pathology; D001943:Breast Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D002278:Carcinoma in Situ / Q000175:diagnosis* / Q000473:pathology; D018270:Carcinoma, Ductal, Breast / Q000175:diagnosis* / Q000473:pathology; D018275:Carcinoma, Lobular / Q000175:diagnosis* / Q000473:pathology; D003287:Contrast Media; D005260:Female; D018226:Fibroadenoma / Q000175:diagnosis* / Q000473:pathology; D005500:Follow-Up Studies; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000191:economics / Q000379:methods*; D008327:Mammography; D008536:Meglumine / Q000031:analogs & derivatives; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D009942:Organometallic Compounds; D012680:Sensitivity and Specificity; D013997:Time Factors
D003287:Contrast Media; D009942:Organometallic Compounds; C064572:gadobenic acid; D008536:Meglumine