Weekly dynamic tumor regression in a nasopharyngeal carcinoma patient receiving MR-guided radiation therapy

Abstract Background Although radiation therapy for nasopharyngeal carcinoma is quite effective, the dynamic changes of tumors during radiation therapy have rarely been reported. Initial case studies have shown promising effects of MR-guided radiation therapy in some solid tumors. Case presentation: Our Center might be the first to report the weekly dynamic tumor regression during MR-guided radiation therapy in one patient with nasopharyngeal carcinoma. Conclusions The authors observed a tolerable safety profile without clinical signs of intolerable toxicity and promising tumor responses on nasopharyngeal carcinoma with MR-guided radiation therapy.