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Tuberculosis of the transverse colon.

Segmental tuberculosis of the transverse colon is very rare and when present is usually associated with active pulmonary tuberculosis. These patients may have initial symptoms suggestive of neoplasm or of Crohn's disease. Radiographically the lesion manifests itself as a fairly long area of narrowing with nodular and ulcerated mucosa. Sinuses and fistulae may arise from the area of involvement. These changes are not specific for tuberculosis. The lesion is unpredictable. It may respond to medical therapy, but complications such as bleeding and sinus tract formation may require surgical intervention.