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Abstract #0580

Preoperative Breast MRI in Patients with Invasive Lobular Carcinoma Reduces the Rate of Surgical Re-Excision

Ritse Maarten Mann1, Claudette E. Loo2, Jelle O. Barentsz1, Kenneth G.A. Gilhuijs2, Theo Wobbes3, Carla Boetes1,4

1Radiology, Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands; 2Radiology, The Netherlands Cancer Institute \ Antoni van Leeuwenhoek Hospital, Amsterdam, Netherlands; 3Surgery, Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands; 4Radiology, Maastricht University Medical Centre, Maastricht, Netherlands

In invasive lobular carcinoma of the breast (ILC), conventional imaging is unable to assess tumor size. Though preoperative MRI has been shown more reliable, the use of preoperative MRI is disputed. We assessed the need for surgical re-excision and the rate of mastectomies in patients treated for ILC with or without preoperative breast MRI. Our results clearly show that preoperative MRI reduces the rate of re-excisions without increasing the rate of mastectomies and should thus be performed in all patients.