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- W2259355320 abstract "Objective: To report clinical and dosimetric outcomes of a consecutive series of patients with anal cancer treated with volumetric-modulated arc therapy (VMAT) concomitant to chemotherapy (CT). Methods: A cohort of 39 patients underwent VMAT employing a schedule consisting of 50.4 Gy/28 fractions to the gross tumour volume (GTV) and 42 Gy/28 fractions to the elective nodal volumes for patients with cT2N0 disease. Patients with cT3–T4/N0–N3 tumours were prescribed 54 Gy/30 fractions to the GTV and 50.4 Gy/30 fractions to the gross nodal volumes if sized ≤3 cm or 54 Gy/30 fractions if > 3 cm. Elective nodal regions were given 45 Gy/30 fractions. CT was administered concurrently following Nigro's regimen. The primary end point was acute toxicity. Secondary end points were colostomy-free survival (CFS), disease-free survival (DFS), cancer-specific survival (CSS) and overall survival (OS). Dosimetric data are also provided. Results: Median follow-up was 21 months. Maximum acute toxicities were: dermatologic—G3: 18%; gastrointestinal–G3: 5%; genitourinary–G3: 2%; anaemia—G2: 7%; leukopenia—G3: 28%; G4: 8%; neutropenia—G3: 13%; G4: 18%; thrombocytopenia—G3: 11%; and G4: 2%. The actuarial 2-year CFS was 77.9% [95% confidence interval (CI): 54–90.4%]. Actuarial 2-year OS and CSS were 85.2% (95% CI: 60.1–95.1%), while DFS was 75.1% (95% CI: 52.4.7–88.1%). Conclusion: Our clinical results support the use of VMAT as a safe and effective intensity-modulated radiotherapy (IMRT) option in the combined modality treatment of anal cancer, with consistent dosimetry, mild toxicity and promising sphincter preservation and survival rates. Advances in knowledge: IMRT is a standard of care for patients with anal cancer, and VMAT is a robust technical solution in this setting." @default.
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- W2259355320 date "2016-04-01" @default.
- W2259355320 modified "2023-09-25" @default.
- W2259355320 title "Volumetric modulated arc therapy (VMAT) in the combined modality treatment of anal cancer patients" @default.
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- W2259355320 doi "https://doi.org/10.1259/bjr.20150832" @default.
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