ArticlePloS one2024
A nationwide epidemiological study of testicular torsion: Analysis of the Japanese National Database.
Article in PloS one, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.
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Who cites it
9 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Association of MPV, NLR, PLR and CRP on testicular salvage in testicular torsion: A systematic review and meta-analysis.Narra J · 2025Pooled it
- Epidemiological study of colovesical fistula as a complication of colonic diverticulitis in Japan: an analysis of claims data.Surgery today · 2026Article
- Late metachronous contralateral torsion after testicular torsion without contralateral orchiopexy: a mid- to long-term follow-up study.Pediatric surgery international · 2026Article
- Glucose/potassium ratio and a novel combined model for the differential diagnosis of testicular torsion: a retrospective study.Basic and clinical andrology · 2026Article
- Clinical characteristics of testicular torsion in children and analysis of factors influencing testicular preservation.Translational pediatrics · 2026Article
- Are we still too late to preserve the testes? A global survey of delayed consultation and risk factors for testicular torsion: a systematic review and meta-analysis.Frontiers in reproductive health · 2026Review
- Article
- Differences in Clinical Outcomes and Patients' Characteristics Between Childhood and Adolescent Testicular Torsion.Cureus · 2024Article
- Are Meteorological Factors, Seasons, and Time of Onset Associated With Acute Scrotum? A Comparative Study of Testicular Torsion and Torsion of the Appendix Testis or Epididymis.Sage open pediatricsArticle
Corrections and comments
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Testicular torsion is a severe urological emergency caused by the twisting of the spermatic cord. The nationwide incidence of testicular torsion in Japan has not been previously reported. Accordingly, we aimed to estimate the nationwide incidence of testicular torsion using the National Database of Health Insurance Claims and Specific Health Checkups of Japan (NDB) and examine the orchiectomy rate. This cross-sectional study was based on data from the NDB. We extracted data of patients aged < 21 years with documented testicular torsion and relevant treatment from January 2018 to December 2020. Testicular torsion was identified based on the Japanese standardized disease codes. The national incidence rate between 2018 and 2020 was calculated and assessed according to age and region of origin. Orchiectomy rates were evaluated according to age. The nationwide incidence rates of testicular torsion were 14.46, 15.09, and 15.88 per 100,000 males aged < 21 years in 2018, 2019, and 2020, respectively. The orchiectomy rate was 7.1%. Testicular torsion was most frequently observed during winter. A similar trend was observed nationwide. To the best of our knowledge, this study is the first to report the nationwide incidence of testicular torsion in Japan.
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