Harmonization of the Volume of Interest Delineation among All Eleven Radiotherapy Centers in the North of France.

Background: Inter-observer delineation variation has been detailed for many years in almost every tumor location. Inadequate delineation can impair the chance of cure and/or increase toxicity. The aim of our original work was to prospectively improve the homogeneity of delineation among all of the senior radiation oncologists in the Nord-Pas de Calais region, irrespective of the conditions of practice.

[Locoregional recurrence of adenocarcinomas of the rectum treated with irradiation combined with or without excision surgery].

Purpose: Retrospective study to analyze the results of external beam radiation treatment with or without surgery for loco-regional recurrence of adenocarcinoma of the rectum following previous surgery without pre- or post-operative radiotherapy.

Patients And Methods: Between March 1973 and November 1991, 211 patients with loco-regional recurrence of rectum cancer were treated with external beam radiation treatment. Radical surgery was the only initial treatment modality.

Radiation therapy with or without surgery in the management of low-grade brain astrocytomas. A retrospective study of 120 patients.

From 1977 to 1988, 120 consecutive patients with a diagnosis of low-grade astrocytoma were referred to our department for radiotherapy. Fourty-one patients (group 1) underwent surgery and post operative external radiation therapy (2 gross total resections and 39 subtotal resections). Sixty-nine patients underwent exclusive external radiotherapy (group 2).