Diagnosis and treatment of anal achalasia in functional megacolon in children

In electromanometric investigation of the rectoanal region, in 103 of 108 patients with established diagnosis of functional megacolon, anal achalasia--rectoanal dyssynergy was diagnosed. In 12 patients, achalasia of the internal anal sphincter was revealed. Because of ineffectiveness of the conservative treatment, which included digital dilation of the external anal sphincter and rectoanal training with bioadaptive regulation, in 10 of 12 patients, myectomy of the internal anal sphincter was performed with a good result.