Evidence map›Paper›PMID 41091184›Full record

ArticleSurgery today2026

Epidemiology and treatment patterns of urachal remnants in adult patients with omphalitis: a nationwide claims-based study in Japan.

Ryota Tokunaga, Takenori Yamauchi, Hiroki Den, Shunsuke Omotaka, Suguru Ogihara, Masayuki Isozaki, Takahiro Hobo, Noboru Yokoyama, Haruhiro Inoue, Akatsuki Kokaze

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In one paragraph

Article in Surgery today, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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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.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Ryota TokunagaDepartment of Hygiene and Public Health and Preventive Medicine, Showa Medical University Graduate School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, Japan.
Takenori YamauchiDepartment of Hygiene and Public Health and Preventive Medicine, Showa Medical University Graduate School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, Japan. yamauchi-t@med.showa-u.ac.jp.
Hiroki DenDepartment of Hygiene and Public Health and Preventive Medicine, Showa Medical University Graduate School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, Japan.
Shunsuke OmotakaDepartment of Hygiene and Public Health and Preventive Medicine, Showa Medical University Graduate School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, Japan.
Suguru OgiharaDigestive Disease Center, Showa Medical University, Koto Toyosu Hospital, 5-1-38, Koto-ku, Tokyo, Japan.
Masayuki IsozakiDigestive Disease Center, Showa Medical University, Koto Toyosu Hospital, 5-1-38, Koto-ku, Tokyo, Japan.
Takahiro HoboDigestive Disease Center, Showa Medical University, Koto Toyosu Hospital, 5-1-38, Koto-ku, Tokyo, Japan.
Noboru YokoyamaDigestive Disease Center, Showa Medical University, Koto Toyosu Hospital, 5-1-38, Koto-ku, Tokyo, Japan.
Haruhiro InoueDigestive Disease Center, Showa Medical University, Koto Toyosu Hospital, 5-1-38, Koto-ku, Tokyo, Japan.
Akatsuki KokazeDepartment of Hygiene and Public Health and Preventive Medicine, Showa Medical University Graduate School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeUrachal remnants are common in neonates and can persist into adulthood. However, their epidemiology in adults remains poorly characterized. We aimed to investigate the prevalence and clinical features of urachal remnants in adult Japanese patients with omphalitis using a nationwide claims database.

methodsWe analyzed data from the Japan Medical Data Center Claims Database (2005-2023) to identify patients  ≥ 15 years of age who were diagnosed with omphalitis. The prevalence of urachal remnants, associated diagnoses, surgical interventions, and time to surgery was examined, focusing on sex differences and age distribution.

resultsOf the 11,477 patients with omphalitis, 1836 (16.0%) had urachal remnants, with a male-to-female ratio of 2.53:1. The prevalence peaked in males of 20-34 years of age, exceeding 30%. Surgical intervention was performed in 39.7% of the cases, with a median time to surgery of 2 months. The number of laparoscopic procedures increased after 2014 and surpassed that of open surgeries by 2018. One case of urachal cancer (0.054%) was also identified.

conclusionUrachal remnants are relatively common in adults with omphalitis, particularly in young males, and usually require surgery. Given the high prevalence and risk of recurrence, early imaging should be considered in adult omphalitis cases to support a timely diagnosis and intervention.

Indexed as

UrachusAdolescentAdultAgedDatabases, FactualFemaleHumansJapanLaparoscopyMaleMiddle AgedPrevalenceSex FactorsTime FactorsUrinary Bladder NeoplasmsYoung AdultClaims databaseEpidemiologyOmphalitisUrachal remnants

Identifiers

PMID41091184
PMCPMC13013219

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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.