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Minerva Surgery 2021 Aug 02

DOI: 10.23736/S2724-5691.21.08839-0

Copyright © 2021 EDIZIONI MINERVA MEDICA

lingua: Inglese

Breast conservative surgery and whole breast radiotherapy vs breast conservative surgery and IORT: surgical opinion

Alessandra INVENTO 1 , Sara MIRANDOLA 2, Giulia DEGUIDI 2, Luna CERNUSCO 3, Renzo MAZZAROTTO 3, Francesca PELLINI 2

1 Division of Breast Surgery, European Institute of Oncology, IRCCS, Milan, Italy; 2 UOC Breast Surgery, Ospedale Civile Maggiore, University hospital of Verona, Verona, Italy; 3 UOC Radiotherapy, Ospedale Civile Maggiore, University hospital of Verona, Verona, Italy


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BACKGROUND: To define the possibility of Intraoperative Radiation Therapy (IORT)’s application on clinical practice and point out the problems observed by Verona Breast Unit.
METHODS: Among AOUI ( Azienda Ospedaliera Universitaria Integrata ) Verona Breast Unit’s patients, treated between July 2015 and June 2017, were identified 459 patients undergoing breast conserving surgery for a carcinoma, followed by IORT in 77 cases or by Whole Breast Radiotherapy (WBRT) in 382 cases. The data of WBRT group were analysed considering IORT’ eligibility criteria to identify a sub-group of candidable patients, for whom we evaluated the diagnostic process that had lead to exclusion from IORT.
RESULTS: In WBRT group 184 patients (48%) had a ductal NOS infiltrating carcinoma, of which 64 cases (16.8%) were eligible for IORT. Other 79 patients of WBRT group (21%) presented DCIS, of which only 27 were in ASTRO (American Society for Radation Oncology) “suitable” group for IORT. Considering the results of the pre-operative exams, or rather agobiopsy and MRI scan, 55 patients of 64 (85.9%) resulted unsuitable for IORT, while 9 patients (14.1%) could be eligible.
CONCLUSIONS: IORT’ major limits are: the restricted eligibility criteria, especially on histology; the need of a complete execution of preoperative exams and the tecnical limits of these exams. ASTRO suitable group, including small diameter, low-grade DCIS, might be used to extend the candidability criteria. A multidisciplinary approach might improve the pre-operative study, so the use of IORT in clinical practice.


KEY WORDS: IORT; Breast conservative surgery; Whole breast radiotherapy

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