Adult Colonic Intussusception. Study about Two Cases Prolapsed by the Anus Operated at the Chu of the Sino-Central African Friendship of Bangui

Introduction : prolapse of the intussusception tube through the anus is a rare complication of intussusception, even in infants. The objective of this study was to report the diagnostic and therapeutic difficulties of 2 cases of colonic intussusception prolapsed through the anus in adults. Observations : in a series of 674 acute intestinal obstruction operated on over three years, we recorded 7 cases of intussusception in adults (1.03%) among which 2 cases of colonic intussusception were prolapsed through the anus either 28.57%. Both patients presented with diffuse abdominal pain, a prolapsed intestinal mass in the anus suggesting a rectal prolapse. Apart from the preoperative paraclinical assessment, no morphological exploration had been carried out. Both patients had undergone a laparotomy during which the diagnosis of colocolic intussusception was made intraoperatively. The attempt to manually reduce the invagination tube was unsuccessful. All invaginated colonic portions were necrotic. The procedures performed included colonic resection followed by colostomy. The restoration of digestive continuity was made one to two months later. The postoperative course was simple and the histopathological study of the surgical specimens revealed chronic inflammation of the colonic mucosa. Conclusion : intussusception is a rare condition in adults. Practitioners should consider the protracted form of intussusception when suspecting rectal prolapse in an adult patient