Abstract
PurposeTo test feasibility and safety of hypofractionated intensity modulated radiotherapy (H-IMRT) in pancreatic adenocarcinoma (PAC) treatment. MethodsPatients with unresectable nonmetastatic PAC were prospectively enrolled on a pilot study. Patients received H-IMRT to gross tumor volume to a total dose of 52 Gy (4 Gy/fraction). Toxicity rates, duodenal dosimetric parameters, and clinical outcomes were evaluated. ResultsTen patients received H-IMRT regimen. Objective tumor response was recorded in all patients but one. Gastrointestinal toxicity was the most common acute side effect and its severity moderately correlated with duodenal maximum dose (ρ = 0.46) and percentage of duodenal volume exposed to 5 Gy (ρ = 0.46). The 1-year overall and disease-free survival were 83.3% and 68.6%, respectively. ConclusionH-IMRT seems to guarantee a high local control rate without severe toxicity. Its use in unresectable nonmetastatic PAC needs to be further investigated.
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