ArticleSurgery today2026
Epidemiological study of colovesical fistula as a complication of colonic diverticulitis in Japan: an analysis of claims data.
Article in Surgery today, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
10 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeColovesical fistula, a serious complication of colonic diverticulitis, often requires surgical intervention. As the epidemiological data for colovesical fistula associated with colonic diverticulitis in Japan are limited, this study investigated its incidence and characteristics using a claims database.
methodsThis retrospective study analyzed the JMDC Claims Database (January, 2005 to August, 2023). Patients with colonic diverticulitis were identified based on diagnosis codes and concurrent antibiotic treatment. Patients diagnosed with colovesical fistulas who underwent surgery were included in the analysis. Patients with fistulas associated with cancer or inflammatory bowel disease such as ulcerative colitis and Crohn’s disease were excluded.
resultsIn total, 42,825 patients with colonic diverticulitis were identified and colovesical fistula developed in 185 (0.43%) of these patients (0.63% in men and 0.07% in women). The median duration from diverticulitis to fistula diagnosis was 0 days, with 73.2% of patients diagnosed simultaneously with, or prior to, diverticulitis. Surgery was performed a median of 49 days after diagnosis.
conclusionThis first Japanese epidemiological study on colovesical fistulas highlights its low incidence, sex differences, and frequent diagnosis before or with colonic diverticulitis. These findings emphasize the importance of recognizing the diverse clinical presentations for a timely diagnosis and better management.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.