Clinical and therapeutic considerations of rectal lymphoma： A case report and literature review

Primary rectal lymphoma is a rare presentation of gastrointestinal lymphomas.Its clinical presentation is indistinguishable from that of rectal carcinoma.Although surgical resection is often technically feasible,optimal therapy for colorectal lymphoma has not yet been identified.We report a case of primary rectal lymphoma(nonHodgkin's iarge cell lymphoma of type B) with high-grade features that disappeared completely after chemoradiotherapy,This case underlines that primary treatment with systemic chemotherapy and involved-field radiotherapy can be successful for rectal lymphoma,with surgery reserved for complications and chemotherapy failures.