To explore the pathogenesis and surgical diagnosis and treatment of adult intussusception.

From January 2005 to January 2018, clinical data of 150 patients with adult intussusception were analyzed retrospectively, including 139 cases received surgical treatment and 4 cases underwent conservative treatment, while 7 cases refused any treatment.

A total of 150 patients included 36 cases of small intestine type, 87 cases of small intestine colon type (ileocecal type), 27 cases of colon colon type. The main causes of intussusception were malignant tumor of 51 cases (36.7%), benign tumor and polyp of 50 cases (36.0%), inflammatory adhesion of 23 cases (16.5%), diverticulum of 6 cases (4.3%). There were 2 cases of heterotopic pancreas (1.4%) and 7 cases of idiopathic intussusception (5.0%). In order to make a definite diagnosis, 150 patients had two or even three examinations: 138 cases received abdominal CT, 26 cases underwent enteroscopy, 22 cases underwent abdominal ultrasound, and 3 cases underwent barium enema (early stage). The correct diagnostic rates of CT, enteroscopy, ultrasonography and barium enema were 97.8%, 90.9%, 92.3% and 100%, respectively.

Adult intussusception has definite etiology, mainly benign and malignant tumors. Abdominal CT is the first choice for adult intussusception. A clear diagnosis before operation is conducive to the implementation of accurate surgery, and the choice of operation mode should be determined according to the location and type of intussusception and the nature of the primary disease.