[Distal Ileal Lymphoma Presenting Ileocecal Intussusception with Spontaneous Reduction].

Intussusception is a rare disease in adults. A demonstrable etiology is found in approximately 85% of all cases, and approximately 40% of them are caused by malignant tumors. A 65-year-old patient visited the outpatient department with mild abdominal pain without other symptoms. The initial laboratory test and simple X-ray showed normal findings. CT revealed intussusception in the ileocecal area. The initial colonoscopic biopsy revealed atypical cells. Follow up colonoscopy showed spontaneous reduction of the intussusception. Diffuse large B-cell lymphoma was suspected in the second colonoscopic biopsy. An elective operation was performed. This case reports a case of a spontaneous reduction of adult intussusception with a brief review of literature.