Characteristics of XXXX and Factors Associated With Complications: A Japanese Multicenter, Retrospective, Cross-Sectional Study.

@entity1 @entity292 @entity12127 @entity4436 @entity850 @entity221
BACKGROUND: Little is known about the epidemiology of @entity4436 in Japan. Additional information is needed about its clinical characteristics and the factors associated with complications of @entity4436 . OBJECTIVE: This study was designed to determine the clinical characteristics of @entity4436 and factors associated with its complications in Japanese @entity1 . DESIGN: This was a retrospective, multicenter, large-scale, cross-sectional study. SETTINGS: All of the consecutive @entity1 in 21 Japanese hospitals with a final diagnosis of acute @entity12127 were included in this study. @entity1 : A total of 1112 @entity1 , including 658 @entity1 and 454 @entity1 , with a mean age of 54.8 years, who were diagnosed by CT and/or ultrasonography between January 2006 and May 2011, were included in this study. INTERVENTIONS: Data on medical history, investigations, treatments, and prognosis were collected using a standard form to create a dedicated database. MAIN OUTCOME MEASURES: Clarification of the clinical characteristics of Japanese @entity1 with acute @entity4436 was the main outcome measured. RESULTS: @entity4436 was detected mainly in @entity1 and @entity1 aged 40 to 60 years. Although @entity4436 more frequently affected the right colon (70.1%), @entity4436 of the left colon was significantly more frequent (61.0%) in elderly @entity1 . Of the 1112 @entity1 with @entity4436 , 179 (16.1%) developed complications, including abscess formation, perforation, @entity850 , and/or @entity292 , some of which required surgical treatment, such as drainage or colonic resection. The duration of hospitalization (24.1        19.5 days) and mortality rate (2.8%) were significantly higher in @entity1 with versus without complications. Factors associated with complications were @entity221 (>38.5  C), involvement of the left colon, higher age, and delayed diagnosis. LIMITATIONS: Limitations included the nonconsideration of @entity4436 treatment, the effect of dietary fiber, and the retrospective design of the study. CONCLUSIONS: Complications were more frequent in elderly @entity1 with left-sided @entity4436 , although @entity4436 was more common in middle-aged @entity1 and on the right side of the colon. Factors associated with complications were @entity221 , site of involvement, older age, and longer time until diagnosis.
