Diagnosis of functional disorders of defecation causing the solitary rectal ulcer syndrome

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Abstract
The solitary rectal ulcer and colitis cystica profunda are different manifestations of the solitary rectal ulcer syndrome. The cause of solitary rectal ulcer syndrome remains unknown. Since defecation disorders are common among patients with solitary rectal ulcer syndrome, defecography is indicated. Defecography was performed on 19 patients with solitary rectal ulcer syndrome. In five patients, the spastic pelvic floor syndrome had occurred. Twelve patients had internal intussusception of the rectum, and one patient had an anterior rectal wall prolapse. In one patient, no abnormalities could be detected. These abnormalities led to severe straining, which can damage the anterior rectal wall. Findings strongly support the hypothesis that solitary rectal ulcers are traumatic lesions caused by straining. Defecography is a suitable procedure for detecting the causative disorder of defecation and for selecting patients for treatment.

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