Colovesical fistulas in children are most often associated with high a
norectal imperforations. Acquired enterovesical fistulas in children o
nly rarely have been reported as a consequence of an inflammatory proc
ess. We present a case of an acquired colovesical fistula formed by th
e erosion of an abscess at the distal end of a colonic duplication in
a child who presented with fever of unknown origin.