The natural history of complicated diverticular disease based on details of 300 patients entered into a national audit between 1985 and 1988 is reported. Questionnaires were sent to the general practitioners of 176 patients with this condition 5 years after hospital admission; 120 responded. Of these 120 patients, ten died from recurrent complicated diverticular disease, 29 died from other disorders and 81 remain alive. Forty of 110 patients (excluding those who died from recurrence) are still symptomatic or were so at the time of unrelated death. Thirty-nine patients developed a severe complication after the index admission, 14 of whom had the same complication initially. Of the 77 patients who had initially been managed by sigmoid resection, only two developed recurrent complications compared with 37 of 43 managed conservatively. Of the ten patients who died from recurrent diverticular disease, nine had not undergone sigmoid colectomy at or after the original admission. These data argue for interval sigmoid colectomy in most patients who initially present to hospital with complicated diverticular disease to prevent later development of potentially lethal complications.
Details of 300 patients with complicated diverticular disease from 30 hospitals between 1985 and 1988 were entered into a national audit organized by the Surgical Research Society. Complications present on admission included acute phlegmon (n = 104), pericolic abscess (n = 34), purulent peritonitis (n = 40), large bowel obstruction (n = 31), faecal peritonitis (n = 23), pericolic abscess complicated by fistula (n = 28) and lower gastrointestinal bleeding (n = 40). The overall mortality rate was 11.3 per cent (acute phlegmon, 4 per cent; purulent peritonitis, 27 per cent; pericolic abscess, 12 per cent; faecal peritonitis, 48 per cent; large bowel obstruction, 6 per cent; bleeding, 2 per cent; fistula, 4 per cent). Acute phlegmon was treated without operation in 78 patients (75.0 per cent) and by resection in 24 (23.1 per cent). Management of purulent peritonitis generally involved Hartmann's procedure (62 per cent) or resection and primary anastomosis (15 per cent). Similarly, patients with pericolic abscess usually underwent Hartmann's procedure (38 per cent) or resection and primary anastomosis (35 per cent). The principal operation for faecal peritonitis was Hartmann's resection (83 per cent). Large bowel obstruction was managed conservatively in four patients (13 per cent), by Hartmann's procedure in nine (29 per cent), and by resection and primary anastomosis with or without a proximal stoma in 13 (42 per cent). Most patients (82 per cent) with fistula associated with an abscess were managed by resection and primary anastomosis; 90 per cent with acute gastrointestinal bleeding were treated without operation.
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