Breast cancer: influence of tumour volume estimation method at MRI on prediction of pathological response to neoadjuvant chemotherapy

Does method of tumour volume measurement on MRI influence prediction of treatment outcome in patients with primary breast cancer undergoing neoadjuvant chemotherapy (NAC)?. The study comprised of 136 women with biopsy-proven breast cancer scheduled for MRI monitoring during NAC treatment. Dynamic co...

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Bibliographic Details
Published in:	British journal of radiology 2018-07, Vol.91 (1087), p.20180123
Main Authors:	Henderson, Shelley A, Muhammad Gowdh, Nazleen, Purdie, Colin A, Jordan, Lee B, Evans, Andrew, Brunton, Tracy, Thompson, Alastair M, Vinnicombe, Sarah
Format:	Article
Language:	eng
Subjects:	Adult Aged Antineoplastic Combined Chemotherapy Protocols Breast Neoplasms - diagnostic imaging Breast Neoplasms - drug therapy Breast Neoplasms - pathology Contrast Media Cyclophosphamide - administration & dosage Docetaxel Epirubicin - administration & dosage Female Fluorouracil - administration & dosage Humans Image Interpretation, Computer-Assisted - methods Magnetic Resonance Imaging - methods Meglumine Middle Aged Neoadjuvant Therapy Organometallic Compounds Predictive Value of Tests Reproducibility of Results Retrospective Studies Taxoids - administration & dosage Trastuzumab - administration & dosage Treatment Outcome Tumor Burden
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Summary:	Does method of tumour volume measurement on MRI influence prediction of treatment outcome in patients with primary breast cancer undergoing neoadjuvant chemotherapy (NAC)?. The study comprised of 136 women with biopsy-proven breast cancer scheduled for MRI monitoring during NAC treatment. Dynamic contrast-enhanced images were acquired at baseline (pre-NAC) and interim (post three NAC cycles) time points. Functional tumour volumes (FTVs), automatically derived using vendor software and enhancing tumour volumes (ETVs), user-derived using a semi-automated thresholding technique, were calculated at each time point and percentage changes calculated. Response, assessed using residual cancer burden (RCB) score on surgically resected specimens, was compared statistically with volumetric changes and receiver operating characteristic analysis performed. Mean volumetric differences for each RCB response category were (FTV/ETV): pathological complete response (pCR) 95.5/96.8%, RCB-I 69.8/66.7%, RCB-II 64.0/65.5%, RCB-III 25.4/24.0%. Differences were significant between pCR and RCB-II/RCB-III categories (p
ISSN:	0007-1285 1748-880X