Evidence map›Paper›PMID 33889405›Full record

ArticleAnnals of medicine and surgery (2012)2021

Asymptomatic patent processus vaginalis is a risk for developing external inguinal hernia in adults: A prospective cohort study.

Takashi Watanabe, Shozo Yokoyama, Makoto Iwahashi, Kazunari Mori, Naohisa Yamade, Kazuya Yamaguchi, Katsunari Takifuji, Yasuyuki Mitani, Kenji Matsuda, Hiroki Yamaue

Open access · diamondAbstract read
In one paragraph

Article in Annals of medicine and surgery (2012), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
1.0field-weighted citation impact, top 24% of its field
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed, 7 citations in OpenAlex.

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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 at 6 institutions in 1 country.

Takashi WatanabeSecond Department of Surgery, School of Medicine, Wakayama Medical University, Wakayama, Japan.
Shozo YokoyamaDepartment of Surgery, National Hospital Organization Minami Wakayama Medical Centre, Wakayama, Japan.
Makoto IwahashiDepartment of Surgery, Labour Health and Welfare Organization Wakayama Rosai Hospital, Wakayama, Japan.
Kazunari MoriDepartment of Surgery, Naga Municipal Medical Centre, Wakayama, Japan.
Naohisa YamadeDepartment of Surgery, Shingu Municipal Medical Centre, Wakayama, Japan.
Kazuya YamaguchiDepartment of Surgery, Hidaka Hospital, Wakayama, Japan.
Katsunari TakifujiDepartment of Surgery, Saiseikai Arida Hospital, Wakayama, Japan.
Yasuyuki MitaniSecond Department of Surgery, School of Medicine, Wakayama Medical University, Wakayama, Japan.
Kenji MatsudaSecond Department of Surgery, School of Medicine, Wakayama Medical University, Wakayama, Japan.
Hiroki YamaueSecond Department of Surgery, School of Medicine, Wakayama Medical University, Wakayama, Japan.
Wakayama Medical University · JPHidaka Hospital · JPMinami Wakayama Medical Center · JPNaga Municipal Hospital · JPSaiseikai Wakakusa Hospital · JPWakayama Rosai Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundInguinal hernia repair is common for children and adults across the world, but the mechanism behind hernia onset still requires elucidation. This prospective study aims to determine whether patent processus vaginalis (PPV) is a factor in the development of external inguinal hernias.

methodWe enrolled 1008 patients who underwent laparoscopic surgery and in whom the inguinal region was observed. If processus vaginalis existed, we measured the diameter and length. Patients were followed for three years after surgery to investigate the incidence of external inguinal hernias.

resultNo significant differences were found between age groups. Furthermore, no difference could be recognized in length or opening diameter of the PPVs between age groups. Three-year follow up was possible for 765 of 1008 patients enrolled in this study (76%), eight of whom, all male, developed external inguinal hernia during this period. Multivariate analysis for onset of inguinal hernia onset in male patients showed that PPV and length of the right PPV were independent risk factors for development of external inguinal hernia.

conclusionThe patency rate, length, and diameter of the processus vaginalis do not differ according to age. The patency of the processus vaginalis in male patients is an independent risk factor for development of external inguinal hernia in adults.

Indexed as

Inguinal herniaProcessus vaginalis

Identifiers

PMID33889405
PMCPMC8050021
OpenAlexW3140126938

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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.