Purpose: AI-based automatic contouring streamlines radiotherapy by reducing contouring time but requires rigorous validation and ongoing daily monitoring. This study assessed how software updates affect contouring accuracy and examined how image quality variations influence AI performance.
Methods: Two patient cohorts were analyzed.
Purpose: Patients with oligometastasis may have prolonged survival with multisite stereotactic ablative radiation therapy (SABR). Evidence to support this paradigm is scarce in squamous cell carcinoma of the head and neck (HNSCC). The multicenter open-label randomized GORTEC 2014-04 (NCT03070366) phase 2 study assesses survival without definitive quality of life (QoL) deterioration of omitting upfront chemotherapy in oligometastatic patients with HNSCC using SABR alone, in the French Head and Neck Intergroup.
View Article and Find Full Text PDFObjective: We investigated the efficacy and safety of afatinib maintenance therapy in patients with head and neck squamous cell carcinoma (HNSCC) with macroscopically complete resection and adjuvant radiochemotherapy (RCT).
Methods: This French multicentric randomised phase III double-blind placebo-controlled study included adult patients with ECOG-PS≤2, normal haematological, hepatic and renal functions, and non-metastatic, histologically confirmed HNSCC of the oral cavity, oropharynx, larynx or hypopharynx, with macroscopically complete resection and adjuvant RCT (≥2 cycles of cisplatin 100 mg/m2 J1, J22, J43 and 66Gy (2Gy/fraction, 5 fractions/week, conventional or intensity modulated radiotherapy ≥60Gy). Randomised patients were planned to receive either afatinib (afa arm) or placebo (control arm (C)) as maintenance therapy for one year.
Background: How best to treat rising prostate-specific antigen (PSA) concentration after radical prostatectomy is an urgent clinical question. Salvage radiotherapy delays the need for more aggressive treatment such as long-term androgen suppression, but fewer than half of patients benefit from it. We aimed to establish the effect of adding short-term androgen suppression at the time of salvage radiotherapy on biochemical outcome and overall survival in men with rising PSA following radical prostatectomy.
View Article and Find Full Text PDFBackground: The number of elderly patients with oesophageal cancer is expected to increase with the aging of the population and the rapidly increasing incidence of adenocarcinoma. Surgical resection is standard treatment for patients with localized disease considered fit for operation. However, elderly patients with oesophageal cancer are rarely referred for surgery.
View Article and Find Full Text PDFPreoperative treatments for patients with T3 rectal cancer have significantly improved local recurrence rates, while survival outcomes have not changed significantly relative to those achieved with surgery alone. The prognosis of patients with T3 tumors, however, is heterogeneous; therapy should be carefully selected based on characteristics of the tumor and other prognostic indices to provide an optimal outcome for each patient. This paper summarizes key findings from several large trials that have examined use of preoperative radiotherapy and chemoradiotherapy for rectal cancer, how these results can be applied to selection of the best therapy for an individual patient, as well as prognostic/predictive factors that have been identified and clinical tools for measuring them.
View Article and Find Full Text PDFCurr Oncol Rep
May 2008
Randomized clinical trials have recently established preoperative chemoradiotherapy as the new standard treatment for patients with localized cT3-T4 or N+ rectal cancer. Although its inclusion in the modern multidisciplinary management of patients with rectal cancer makes total eradication of pelvic failure a near reality, it does not yet translate into improved survival. As a result, clinical research should be primarily directed against the micrometastatic process, focusing on integrating innovative strategies, such as upfront chemotherapy before chemoradiation, in subgroups of patients recognized to be at high risk.
View Article and Find Full Text PDFSmall and large bowels are dose-limiting structures for acute and late toxicity of abdominopelvic radiotherapy. Minor or moderate toxicities are underestimated. Major toxicities may occur years from treatment.
View Article and Find Full Text PDFPurpose: To analyse clinical and dosimetric characteristics with regard to clinical constraints in head and neck cancer patients treated with intensity-modulated radiotherapy (IMRT).
Materials And Methods: Between August 2001 and July 2005, 75 patients with non-metastatic head and neck cancers were treated with IMRT with curative intent. Dose-volume histograms (DVH) drawn up from inverse dosimetry were analysed and compared to the prescription according to the clinical presentation of the disease.
The appropriate application of 3-D conformal radiotherapy, intensity modulated radiotherapy or image guided radiotherapy for patients undergoing post-operative radiotherapy for prostate cancer requires a standardisation of the target volume definition and delineation as well as standardisation of the clinical quality assurance procedures. Recommendations for this are presented on behalf of the European Organisation for Research and Treatment of Cancer (EORTC) Radiation Oncology Group and in addition to the already published guidelines for radiotherapy as the primary treatment.
View Article and Find Full Text PDFGastroenterol Clin Biol
April 2007
Purpose: We performed a retrospective analysis in order to evaluate the compliance with preoperative radiotherapy in patients aged>or=70 with locally advanced resectable rectal cancer, and to evaluate the influence of comorbidities on treatment tolerance and oncological results.
Methods: From March 1984 to December 2000, 95 patients with T3-T4 N0 M0 rectal cancer received a preoperative radiotherapy in 2 radiotherapy departments. Nineteen patients received concomitant chemotherapy.
Objective: The currently used tumor-node metastasis (TNM) staging method is generally not applicable to patients with unresectable esophageal carcinomas. There is a need for both an efficient, easy-to-perform clinical classification and for identification of pretherapeutic prognostic factors that would be useful for oncologists, one of which is tumor volume.
Methods: Records of 148 patients, admitted to hospital during the period January 1993 to December 2001, were evaluated retrospectively.
Dis Colon Rectum
January 2007
Purpose: The European Organization for Research and Treatment of Cancer (EORTC) phase II study No. 22953 demonstrated the feasibility of reducing the overall treatment time of chemoradiation, delivering mitomycin C twice rather than once and fluorouracil during the whole treatment. We tested the feasibility of chemoradiation in anal carcinoma with mitomycin and cisplatin in a phase II study.
View Article and Find Full Text PDFPurpose: To retrospectively analyze a series of mucosal melanoma of the upper aerodigestive tract to determine the prognostic factors and contribute to understanding the role of radiotherapy in the therapeutic strategy.
Methods And Materials: Seventy-four patients were analyzed. The most frequent locations were nasal and oral, in 31 patients (41.