NDLI: Magnetic resonance imaging for assessment of parametrial tumour spread and regression patterns in adaptive cervix cancer radiotherapy.

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Magnetic resonance imaging for assessment of parametrial tumour spread and regression patterns in adaptive cervix cancer radiotherapy.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Schmid, Maximilian P. Fidarova, Elena Pötter, Richard Petric, Primoz Bauer, Veronika Woehs, Veronika Georg, Petra Kirchheiner, Kathrin Berger, Daniel Kirisits, Christian Dörr, Wolfgang Dimopoulos, Johannes C. A.
Description	Country affiliation: Austria Author Affiliation: Schmid MP ( Department of Radiotherapy, Comprehensive Cancer Center, Medical University of Vienna , Vienna , Austria.)
Abstract	PURPOSE: To investigate the impact of magnetic resonance imaging (MRI)-morphologic differences in parametrial infiltration on tumour response during primary radiochemotherapy in cervical cancer. MATERIAL AND METHODS: Eighty-five consecutive cervical cancer patients with FIGO stages IIB (n = 59) and IIIB (n = 26), treated by external beam radiotherapy (± chemotherapy) and image-guided adaptive brachytherapy, underwent T2-weighted MRI at the time of diagnosis and at the time of brachytherapy. MRI patterns of parametrial tumour infiltration at the time of diagnosis were assessed with regard to predominant morphology and maximum extent of parametrial tumour infiltration and were stratified into five tumour groups (TG): 1) expansive with spiculae; 2) expansive with spiculae and infiltrating parts; 3) infiltrative into the inner third of the parametrial space (PM); 4) infiltrative into the middle third of the PM; and 5) infiltrative into the outer third of the PM. MRI at the time of brachytherapy was used for identifying presence (residual vs. no residual disease) and signal intensity (high vs. intermediate) of residual disease within the PM. Left and right PM of each patient were evaluated separately at both time points. The impact of the TG on tumour remission status within the PM was analysed using χ(2)-test and logistic regression analysis. RESULTS: In total, 170 PM were analysed. The TG 1, 2, 3, 4, 5 were present in 12%, 11%, 35%, 25% and 12% of the cases, respectively. Five percent of the PM were tumour-free. Residual tumour in the PM was identified in 19%, 68%, 88%, 90% and 85% of the PM for the TG 1, 2, 3, 4, and 5, respectively. The TG 3-5 had significantly higher rates of residual tumour in the PM in comparison to TG 1 + 2 (88% vs. 43%, p < 0.01). CONCLUSION: MRI-morphologic features of PM infiltration appear to allow for prediction of tumour response during external beam radiotherapy and chemotherapy. A predominantly infiltrative tumour spread at the time of diagnosis resulted in a significantly higher rate of residual tumour in the PM at the time of brachytherapy in comparison to a predominantly expansive tumour spread.
File Format	HTM / HTML
ISSN	0284186X
e-ISSN	1651226X
Journal	Acta Oncologica
Issue Number	7
Volume Number	52
Language	English
Publisher	Taylor and Francis
Publisher Date	2013-10-01
Publisher Place	Great Britain (UK)
Access Restriction	Open
Subject Keyword	Discipline Oncology Brachytherapy Carcinoma, Squamous Cell Pathology Chemoradiotherapy Magnetic Resonance Imaging Radiotherapy, Image-guided Uterine Cervical Neoplasms Therapy Neoplasm Grading Neoplasm Staging Prognosis Tomography, X-ray Computed Tumor Burden Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Radiology, Nuclear Medicine and Imaging Hematology Oncology

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