Colonoscopy with biopsy is a useful method for diagnosing colonic tuberculosis. Even in the absence of the classic histopathological features, a therapeutic trial may be indicated in a given clinical and colonoscopic setting. Follow-up is essential.

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Retroperitoneal colonic perforation in patients with ulcerative colitis is rare. We report such a case in a patient with severe ulcerative colitis without toxic dilatation in whom mediastinal and subcutaneous emphysema also developed. Unlike previously reported cases, our patient was treated conservatively with intravenous fluids, parenteral nutrition, intravenous hydrocortisone, and antibiotics. After 2 weeks, the mediastinal and subcutaneous emphysema and the retroperitoneal air completely disappeared.

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