Salmonella typhimurium: a rare cause of colonic ulceration and perforation in infancy.

A rare case of a healthy infant with colonic ulcers caused by Salmonella typhimurium infection that presented with colonic perforation, hypovolemic, and septicemic shock is discussed. It stresses the importance of considering an infective process such as salmonellosis in the differential diagnosis of colonic ulceration in an infant and illustrates the unique histologic finding of colonic inflammatory changes with sparing of the small intestine.