Rate of re-intervention following breast cancer treatment with therapeutic round block mammoplasty: 7 years single centre experience

Abstract

s / International Journal of Surgery 12 (2014) S13eS117 S17 Introduction: Invasive lobular carcinoma (ILC) accounts for 10% of breast cancers and is associated with multifocal and contralateral breast involvement. The National Institute of Clinical Excellence (NICE) guidelines (2009) recommended the use of Magnetic Resonance Imaging (MRI) in the preoperative assessment of ILC. This study aims to assess compliance with guidelines in two District General Hospitals and the utility of MRI in the investigation of ILC. Methods: All cases of ILC between 2011 and 2013 were retrospectively identified from the pathology database and their breast imaging findings were reviewed. Results: 107 patients had ILC, of these 41 hadMRI preoperatively (38%). MRI upgraded mammography/ultrasound diagnoses in 8 patients (19.5%). MRI showed multifocal disease in 13 patients (31.7%) occult on ultrasound/ mammogram, with these patients undergoing mastectomy. MRI showed a contralateral lesion in 9 patients, 4 (9.8%) of which were ILC (5 benign) with these patients having bilateral surgery. MRI also downgraded 4 (9.8%) patients to unifocal disease with reported multifocal appearances on mammography/ultrasound, andMRI findings were confirmed histologically. Conclusions:MRI is highly accurate in the diagnosis of bothmultifocal and contralateral disease in ILC and should be undertaken in all such cases preoperatively assuming no contraindication. 0530: RATE OF RE-INTERVENTION FOLLOWING BREAST CANCER TREATMENT WITH THERAPEUTIC ROUND BLOCK MAMMOPLASTY: 7 YEARS SINGLE CENTRE EXPERIENCE Jason On, Elaine Yeap, Shailesh Chaturvedi. Aberdeen Royal Infirmary,