Ecthyma gangrenosum is a cutaneous gangrenous disorder which usually follow
s Pseudomona aeruginosa infection and is found mainly in immunosuppressed c
hildren. We describe a case of a five-year-old female with leukemia with a
severe perineal ecthyma gangrenosum resulting in a cloaca-like deformity. O
ne year later a perineoplasty with puborectalis interposition and overlappi
ng external anal sphincteroplasty was successfully performed, achieving sat
isfactory continence.