[New surgical technic in megarectum].

The sphinctero-myectomy as a surgical treatment of megarectum has been generally advocated, but its results are not always satisfactory. In this paper, a new surgical treatment will be presented. Ten cases with idiopathic chronic constipation presenting megarectum in barium enema underwent this operation. After anal dilatation, incision was made in width of 2 cm at 6 o'clock on the dentate line. The blunt split between internal and external sphincter muscles was advanced to 6 cm orally. The all layers of superior part of anus and lower part of rectum in length of 5 cm were clumped by two forceps in width of 1 cm. Then the all layers in outer side of forceps were cut bilaterally. The rectum on the top of the forceps was pulled through to the dentate line and was anastomosed there. The operative results were evaluated more than one year after the operation. Complete cure was noticed in 7 cases and marked improvement in 3 cases. Our procedure, named as sphinctero-myectomy and plasty can be operation of choice for chronic constipation with megarectum.