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Hirschprungs disease

Usually sigmoid/rectosigmoid

With time marked proximal dilatation

Rectum usually normal or contracted

DX relies on the transition from normal/reduced caliber area to dilated area

No colonic wash; limited amount of barium

Idiopathic-dilated colon

GIT bleedingArteriographySite cause & stop bleeding

Radionuclide studiesSimpler but as accurate as arteriography asTc labeled RBCs/colloid more than 0.5 ml/min

Tc pertechnetate meckel diverticulum

Endoscopy DX & treatment

BE not done