Document Detail


Does primary tumour volumetry performed early in the course of definitive concomitant chemoradiotherapy for head and neck squamous cell carcinoma improve prediction of primary site outcome?
MedLine Citation:
PMID:  20965907     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Although previous studies have documented correlations between pre-treatment or post-treatment primary tumour volumes and local outcome following definitive concomitant chemoradiotherapy (CCRT) in head and neck squamous cell carcinoma (HNSCC), no study has included and compared tumour volumes during CCRT. We reviewed the MRIs of 69 HNSCC patients treated with a 6 weeks course of CCRT and who underwent successful MRI pre-treatment (n = 69), 2 weeks intra-treatment (n = 48) and 6 weeks post-treatment (n = 61). Primary tumour volumes on MRI at the three time points were calculated and compared for their predictive value for primary site outcome. Volume thresholds optimised to predict failure with the highest accuracy and positive predictive value (PPV) were calculated. The mean pre-treatment volume was 24.6 cm³ (range, 1.1-187.9 cm³) and the mean follow-up interval was 41 months (range, 12-100 months). 23 primary tumours failed treatment (33%). Volumes before, during and after CCRT were positively associated with local failure (p = 0.015, p = 0.009, p<0.0001). Volume reductions during and after CCRT were negatively associated with local failure (p = 0.021, p = 0.001). Pre-treatment and intra-treatment volume thresholds achieved the highest accuracy and produced intermediate PPVs (51-64%) for predicting local failure. Optimised intra-treatment thresholds did not identify any more treatment failures than the pre-treatment thresholds. By comparison, a 6 weeks post-treatment volume reduction (<35%) achieved 100% PPV for failure, albeit with 26% sensitivity. In conclusion, primary tumour volumetry performed early in CCRT provides minimal additional information compared with pre-treatment volumetry, with respect to predicting post-treatment local failures. Therefore, volumetry during CCRT is unlikely to be useful for guiding individual response-based therapeutic modifications.
Authors:
K S S Bhatia; A D King; K-H Yu; A C Vlantis; G Mk Tse; F Kf Mo; A T Ahuja
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The British journal of radiology     Volume:  83     ISSN:  1748-880X     ISO Abbreviation:  Br J Radiol     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-10-22     Completed Date:  2010-11-23     Revised Date:  2013-07-03    
Medline Journal Info:
Nlm Unique ID:  0373125     Medline TA:  Br J Radiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  964-70     Citation Subset:  AIM; IM    
Affiliation:
Department of Imaging and International Radiology, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, New Territories, Hong Kong SAR, China. drkbhatia@cuhk.edu.hk
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MeSH Terms
Descriptor/Qualifier:
Aged
Antineoplastic Combined Chemotherapy Protocols / therapeutic use*
Carcinoma, Squamous Cell / drug therapy,  pathology*,  radiotherapy
Cisplatin / administration & dosage
Combined Modality Therapy / methods
Female
Head and Neck Neoplasms / drug therapy,  pathology*,  radiotherapy
Humans
Magnetic Resonance Imaging / methods*
Male
Middle Aged
Neoplasm Staging
Radiotherapy Dosage
Treatment Outcome
Tumor Burden* / drug effects,  radiation effects
Chemical
Reg. No./Substance:
15663-27-1/Cisplatin
Comments/Corrections

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