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Adult patients with an idiopathic megarectum or megacolon can experience severe constipation requiring surgical treatment. Some of these patients have a proximal colon of normal diameter, with dilatation involving only the left or distal colon and rectum. The results of partial colonic and rectal resection with coloanal anastomosis in such patients have been reviewed. Seven patients (two female and five male) underwent a coloanal anastomosis over a seven-year period. The median age at operation was 19 years, the mean age at onset of symptoms was five years, and the mean follow-up period was one year. Five patients experienced a return to normal bowel frequency with the loss of most symptoms. One patient has an ileostomy because of persistent constipation after the procedure. One subject died because of postoperative bleeding from the anastomosis and subsequent cardiac and respiratory complications. This operation may have a place in the treatment of severe constipation caused by idiopathic megarectum and megacolon, but careful preoperative motility studies and meticulous attention to operative technique are required for a good outcome.

Seven patients with widespread, active, stricturing, small intestinal Crohn's disease and two with localized disease were treated by a total of 45 strictureplasties. They have been followed up for a mean of 20 months (range, 6 to 30). Two patients had early postoperative complications with enterocutaneous fistulas, one of which may have been related to a strictureplasty. The two patients with localized disease remain well after 16 and 30 months. Of the seven patients with extensive small bowel disease, two are well six and 28 months after surgery. Recurrent symptoms developed in six patients two to six months postoperatively; four of those patients required further surgery. Previous reports of strictureplasty in inactive Crohn's strictures suggest it is a safe operation with good long-term results. Strictureplasty in active Crohn's disease has a much higher recurrence rate of symptoms. Because it is a conservative operation, however, we believe it has a place in the surgical treatment of Crohn's disease.

There is doubt about the timing of surgery for patients with internal fistulas in Crohn's disease. Although immediate operative intervention for all patients has been advocated, such a policy has not always been followed at St. Mark's Hospital. Between 1971 and 1982, 83 internal fistulas were identified in 59 patients with Crohn's disease. Fifty-nine fistulas arose primarily from the small intestine and involved another segment of the bowel, five were between large bowel and duodenum, and three between areas of large bowel. Sixteen fistulas (ten from ileum and six from large bowel) involved the bladder. Thirty-six patients with 54 fistulas underwent immediate surgical treatment. Fifteen patients with 20 fistulas required surgery later. There was one postoperative death among the 51 patients treated surgically and one late death unrelated to the treatment of the fistula. Of the remaining 49 surgically treated patients, 46 were traced and remain well, six after further surgery. Eight patients with nine fistulas (four involving the bladder) were treated at St. Mark's without operation. One later required surgery elsewhere for an enterocutaneous fistula, but the remaining seven patients are well. This study suggests that the presence of an internal fistula, even if it involves the bladder, is not an absolute indication for immediate surgery and that the severity of the symptoms should dictate the treatment policy.

A series of 12 patients with relative sparing of the rectum in ulcerative colitis is analyzed. Half were recorded as having normal sigmoidoscopic appearance and, in every case, double-contrast barium enema showed an apparently normal rectum but an abnormal colon. Rectal biopsy showed changes compatible with ulcerative colitis in all cases, though in four, changes were slight. Thus, complete histologic sparing of the rectum was not observed. In four of six patients treated by colectomy and ileorectal anastomosis, inflammation of the retained rectum required medical or surgical treatment.