Childhood colostomies: patterns, indications and outcomes in a Nigerian University Teaching Hospital

Background: Most childhood colostomies are done for decompression or diversion in gastrointestinal tract congenital anomalies. Colostomy may be sited in the transverse or sigmoid colon as loop or defunctioning (divided) colostomies. Current pattern seems towards construction of more sigmoid and defunctioning colostomies. Aims: To evaluate the patterns, indications and outcomes of childhood colostomies. Patients and Methods: Retrospective chart review of all colostomies performed in children below 15 years from September 2010 to August 2020. Results: There were 104 colostomies (55males; 49females; 65 sigmoid; 39 transverse colostomies; 3 loop; 101 defunctioning colostomies. Anorecatal Malformation (ARM)was indication in 32 males and 41 females; age range 2 days to 13 years. Hirschsprung's Disease (HD) was indication in 18 males and 4 females; age range 6 weeks to 15 years. In HD there were three loop colostomies (3/22) in transverse colon and 19 defunctioning colostomies (8 sigmoid, 11 transverse) while in ARM all 73 were defunctioning colostomies(P=0.01) In HD there were 14/22 transverse colostomies and 8/22 sigmoid colostomies while ARM had 24/73 transverse and 49/73 sigmoid colostomies (P =0.013) In HD 91% colostomies were done beyond infancy while in ARM 93% were before one year(P<0.0001). Mortalities were noted in 1.9% patients. Conclusion: Commonest indication for colostomy is ARM. There are more defunctioning than loop colostomies, and more sigmoid than transverse colostomies. of most colostomies in ARM were during infancy while mostly beyond infancy in HD.