- 作者：Kamyar Shahedi ; Garth Fuller ; Roger Bolus ; Erica Cohen ; Michelle Vu ; Rena Shah ; Nikhil Agarwal ; Marc Kaneshiro ; Mary Atia ; Victoria Sheen ; Nicole Kurzbard ; Martijn G.H. van Oijen ; Linnette Yen ; Paul Hodgkins ; M. Haim Erder ; Brennan Spiegel
- 关键词：Colon ; Pouch ; Prognosis ; Diverticular Disease
- 刊名：Clinical Gastroenterology and Hepatology
- 出版年：December, 2013
- 年：2013
- 卷：11
- 期：12
- 页码：1609-1613
- 全文大小：286 K
Background & Aims
Colonic diverticulosis is the most common finding during routine colonoscopy, and patients often question the significance of these lesions. Guidelines state that these patients have a 10% to 25% lifetime risk of developing acute diverticulitis. However, this value was determined based on limited data, collected before population-based colonoscopy, so the true number of cases of diverticulosis was not known. We measured the long-term risk of acute diverticulitis among patients with confirmed diverticulosis discovered incidentally on colonoscopy.Methods
We performed a retrospective study using administrative and clinical data from the Veterans Affairs Greater Los Angeles Healthcare System, collecting data on patients who underwent colonoscopies from January 1996 through January 2011. We identified patients diagnosed with diverticulosis, determined incidence rates per 1000 patient-years, and analyzed a subgroup of patients with rigorously defined events confirmed by imaging or surgery. We used a Cox proportional hazards model to identify factors associated with the development of diverticulitis.
Results
We identified 2222 patients with baseline diverticulosis. Over an 11-year follow-up period, 95 patients developed diverticulitis (4.3%; 6 per 1000 patient-years); of these, 23 met the rigorous definition of diverticulitis (1%; 1.5 per 1000 patient-years). The median time-to-event was 7.1 years. Each additional decade of age at time of diagnosis reduced the risk for diverticulitis by 24% (hazard ratio, 0.76; 95% confidence interval, 0.6-0.9).
Conclusions
Based on a study of the Veterans Affairs Greater Los Angeles Healthcare System, only about 4% of patients with diverticulosis develop acute diverticulitis, contradicting the common belief that diverticulosis has a high rate of progression. We also found that younger patients have a higher risk of diverticulitis, with risk increasing per year of life. These results can help inform patients with diverticulosis about their risk of developing acute diverticulitis.