A Case of Intussusception Caused by Ascending Colon Cancer in an Elderly Woman

In September 2015, a 90-year-old woman presented with abdominal pain and emesis as the chief complaints. Except for WBC counts of 10,420/mL, CRP levels of 5.69mg/dL, and ALP levels of 359 IU/L, no other abnormal values were noted, and CEA and CA19-9 tumor marker levels were normal at 3.9 ng/mL and 5.7 U/mL, respectively. Abdominal CT showed intussusception of the right colon and a solid tumor at the presenting portion. Surgery for suspected intussusception caused by colon cancer was performed. Surgical findings revealed a protruding lesion at the ascending colon that extended to the transverse colon, and the intussusception was intrusive up to the ascending colon at the end of the intestinal ileum. Thus, resection of the right half colon and dissection of lymph nodes were performed. Resected specimens revealed a type 1 tumor measuring 65×50×30mm in diameter at the ascending colon. Histopathologic findings revealed tub1>tub2, SS, ly0, v0, PM0, DM0, N0 (0/27)Stage Ⅱa tumor. The postoperative course was favorable, and the patient was discharged on postoperative day 12. We report about a rare case of intussusception caused by ascending colon cancer.