Adult intussusception: the Jos experience.

Twenty two consecutive cases of adult intussusception managed between January 1990 and December 1998 at Jos University Teaching Hospital formed the basis of this study. Thirteen (59.1%) of the patients were males and 9(40.9%) females, with a male to female ratio of 1:4:1 and a mean age of 49.6 years. Most patients were referred late to our service as a result of poor index of suspicion and misdiagnosis. Laparotomy was done in all the cases and in 5(22.7%) patients no cause could be found, but in the remaining 17(77.3%) definite causes were identified which were mainly polyps in 7(31.8%) patients and colonic malignancies in 4(18%). The ileocolic intussusception was the commonest variety. Sixteen (72.7%) patients had bowel resection for colonic carcinoma, gangrenous bowel and irreducibility of the intussusception while manual reduction was successful in the other 6(27.3%) patients. The morbidity rate was 22.7% and the complications were wound infection and adhesive intestinal obstruction. Two deaths were recorded with a mortality rate of 9.1%. The pattern of adult intussusception as seen in the western world was observed in this tropical highland.