Sx:Crampy and often bloody diarrhea

Si:Guaiac-positive stool

After initial acute illness, gradual scarring with lumen narrowing, which gradually normalizes, some progress to chronicity due to microscopic damage to vessels

Strictures sometimes, although most heal

Lab: Noninv:Endoscopy w bx quite specif

Xray:Abdominal xray typically nonspecific, segmental dilation, pneumatosis. CT preferred; shows thromboembolism of mesenteric vessels, intramural or portal venous gas, segmental thickening of the bowel wall, absence of bowel wall enhancement with contrast-enhanced CT, mucosal edema (thumbprinting), possibly bowel dilatation proximal to the ischemic segment of the bowel

Rx:Surgery usually not necessary; watch for stricture later