Evidence map›Paper›PMID 41338983›Full record

ArticleInternal medicine (Tokyo, Japan)2026

A Hybrid Peripheral Nerve Sheath Tumor (Granular Cell Tumor+Schwannoma) of Cystic Duct Origin, Presenting with Gallbladder Enlargement and Abdominal Pain.

Akira Imoto, Masahiro Yamamura, Atsushi Okuda, Nao Kawaguchi, Koji Komeda, Shigeru Kawabata, Emi Yasuda, Yoshitaka Kurisu, Takeshi Ogura, Sang-Woong Lee and 2 more

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In one paragraph

Article in Internal medicine (Tokyo, Japan), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

12 authors.

Akira ImotoSecond Department of Internal Medicine, Osaka Medical and Pharmaceutical University, Japan.
Masahiro YamamuraSecond Department of Internal Medicine, Osaka Medical and Pharmaceutical University, Japan.
Atsushi OkudaSecond Department of Internal Medicine, Osaka Medical and Pharmaceutical University, Japan.
Nao KawaguchiDepartment of General and Gastroenterological Surgery, Osaka Medical and Pharmaceutical University, Japan.
Koji KomedaDepartment of General and Gastroenterological Surgery, Osaka Medical and Pharmaceutical University, Japan.
Shigeru KawabataDepartment of Pathology, Osaka Medical and Pharmaceutical University, Japan.
Emi YasudaDepartment of Pathology, Osaka Medical and Pharmaceutical University, Japan.
Yoshitaka KurisuDepartment of Pathology, Osaka Medical and Pharmaceutical University, Japan.
Takeshi OguraSecond Department of Internal Medicine, Osaka Medical and Pharmaceutical University, Japan.
Sang-Woong LeeDepartment of General and Gastroenterological Surgery, Osaka Medical and Pharmaceutical University, Japan.
Yoshinobu HiroseDepartment of Pathology, Osaka Medical and Pharmaceutical University, Japan.
Hiroki NishikawaSecond Department of Internal Medicine, Osaka Medical and Pharmaceutical University, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Granular cell tumors and schwannomas rarely occur in cystic ducts. We herein report a case of a hybrid tumor consisting of a cystic duct-originating granular cell tumor and schwannoma. A 48-year-old woman was referred to our hospital with the chief complaint of occasional postprandial abdominal pain after an enlarged gallbladder was found on ultrasonography. The cause was identified as a mass measuring approximately 7 mm in diameter in the cystic duct, and the patient underwent extrahepatic cholangiectomy. An examination of the surgical specimen revealed that the mass originated from the cystic duct and narrowed the duct lumen. Histopathologically, both granular cell tumors and schwannoma components were detected. To our knowledge, this is the first report of a hybrid peripheral nerve sheath tumor with a mixture of granuloma cell tumors and schwannomas.

Indexed as

Abdominal PainBile Duct NeoplasmsCystic DuctGallbladderGranular Cell TumorNerve Sheath NeoplasmsNeurilemmomaFemaleHumansMiddle Agedbile ductcystic ductgranular cell tumorhybrid peripheral nerve sheath tumorschwannoma

Identifiers

PMID41338983
PMCPMC13423753

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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.