Diverticular disease of the colon at a regional general hospital in Japan

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Abstract
X-ray film registry records were reviewed to better understand the changing nature of diverticular disease (DD) of the colon in Japan. Among 6,849 patients undergoing barium enema examination during a eight-year period from 1985 to 1992, this condition was found in 1,074 patients (15.7 percent), including 702 males (65.4 percent) and 372 females (34.6 percent). During this eight-year period there was an increase in frequency from 10.7 percent in 1985 to 17.8 percent in 1992. The proportion of patients with right-sided, bilateral, and left-sided DD was 69.2 percent, 17.5 percent, and 13.3 percent, respectively. The right-sided DD was more common in the younger age group and was predominant in male patients, whereas the left-sided DD increased with age, especially in female patients. Of the 1,074 patients, 11 (1.0 percent) underwent surgery in the same period. Regarding the right-sided DD, only 2 of 743 patients received surgery (0.3 percent). On the other hand, of the 143 patients with left-sided DD, 9 patients (6.3 percent) received some form of surgery. Right-sided diverticular disease of the colon is still common in Japan. It does not appear that this tendency will change in the future. Nearly all patients diagnosed as having diverticula had either no symptoms or only mild symptoms, and only about 1 percent required surgery. Right-sided diverticular disease of the colon seems to have had no serious clinical problems compared with left-sided DD.