Publication date: Available online 11 November 2017
Source:Cancer/Radiothérapie
Author(s): H. Carette, J.-C. Faivre, J. Salleron, A.-S. Baumann, L. Uwer, C. Clément-Duchêne, J.-M. Vignaud, I. Petit, J. Siat, A. Tiotiu, V. Beckendorf
Objectif de l'étudeLe recours à la radiothérapie prophylactique afin de prévenir les métastases des sites d'intervention pleurale dans le mésothéliome pleural malin demeure controversé et les pratiques cliniques variées. L'objectif était d'évaluer l'efficacité d'une séance unique de radiothérapie externe de 10Gy en prévention de l'ensemencement des sites d'intervention pleurale chez des patients atteints de mésothéliome pleural malin.Matériel et méthodesIl s'agit d'une étude épidémiologique descriptive rétrospective de cohorte, incluant les patients atteints d'un mésothéliome pleural malin histologiquement prouvé irradiés en regard des sites d'intervention pleurale par des électrons de 6 à 18MeV, entre janvier 1990 et décembre 2013 à l'institut de cancérologie de Lorraine.RésultatsQuatre-vingt-onze patients ont été traités par irradiation prophylactique des sites d'intervention pleurale, soit 120 sites d'intervention pleurale, 91 thoracoscopies, 17 thoracotomies avec drainage pleural, 12 ponctions-biopsies guidées par scanographie ou échographie. Le suivi médian était de 7 mois (intervalle interquartile entre 3 et 15 mois). La probabilité de survie globale était de 43,5 % à 12 mois, celle de survie sans progression de 43,7 %. L'incidence de la progression locale était de 8 % à 12 mois. Le temps médian écoulé entre l'irradiation et la progression locale était de 4 mois (2 ; 32). Il n'y a pas eu d'effet secondaire précoce ou tardif de grade supérieur ou égal à deux.ConclusionL'irradiation des sites d'intervention pleurale en une séance unique de 10Gy est efficace, bien tolérée, simple, rapide et peu coûteuse.PurposeProphylactic radiotherapy to prevent procedure-tracts metastases from malignant pleural mesothelioma remains controversial and clinical practice varies. The purpose was to assess the efficacy of local radiotherapy in a single fraction of 10Gy in preventing malignant seeding at intervention pleural site in patients with malignant pleural mesothelioma.Material and methodsThis is a retrospective cohort study, including patients with histological confirmed malignant pleural mesothelioma treated by prophylactic irradiation to prevent interventional site metastases with a unique fraction of 10Gy with 6 to 18MeV, from January 1990 to December 2013 in the institut de cancérologie de Lorraine (Nancy, France).ResultsNinety-one patients were treated by irradiation in intervention site, involving 120 intervention pleural sites, 91 thoracoscopies, 17 thoracotomies with chest drain and 12 CT or ultrasound guided needle biopsies. The median follow-up was 7 months (interquartile between 3 and 15 months). The overall survival was 43.5% at 12 months. The local progression free survival was 43.7% at 12 month. The incidence of local recurrence was 8% at 12 months. The median interval from radiotherapy to local recurrence was 4 months (2; 32). No grade II or higher toxicity was observed.ConclusionIrradiation of pleural intervention sites with a single fraction of 10Gy is effective, well tolerated, simple, fast and cost effective.
from #ORL-AlexandrosSfakianakis via ola Kala on Inoreader http://ift.tt/2jjFv4S
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