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Locally advanced (T3/T4) gallbladder cancers with large fixed portal nodes have a dismal prognosis. If undertaken, surgery entails extensive resections with high morbidity; therefore, in many centers, patients are offered palliative chemotherapy. In this prospective study, we used neoadjuvant concurrent chemoradiation with the intention of downstaging and facilitating R0 resection of these tumors.

Twenty-eight patients with locally advanced carcinoma gallbladder (stage III, having deep liver infiltrations and/or large portal nodes) underwent prior positron emission tomography/computed tomography to rule out metastatic disease. All were treated with concomitant chemoradiation using helical tomotherapy (dose of 57 Gy over 25 fractions to the gross tumor and 45 Gy over 25 fractions to the surrounding nodes) with injectable …