Evidence map›Paper›PMID 29921303›Full record

ArticleWorld journal of surgical oncology2018

A rare case of perivascular epithelioid cell tumor (PEComa) of the greater omentum.

Koichi Okamoto, Yuka Okada, Kohei Ohno, Takahiro Yagi, Mitsuo Tsukamoto, Takuya Akahane, Ryu Shimada, Tamuro Hayama, Takeshi Tsuchiya, Keijiro Nozawa and 4 more

Open access · goldAbstract readCase Reports
In one paragraph

Article in World journal of surgical oncology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.1field-weighted citation impact, top 23% 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

11 citing papers in PubMed, 17 citations in OpenAlex.

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  10. Histopathologic characteristics and immunotypes of perivascular epithelioid cell tumors (PEComa).International journal of clinical and experimental pathology · 2019
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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

14 authors at 1 institution in 1 country.

Koichi OkamotoDepartment of Surgery, Teikyo University School of Medicine, 2-11-1 Kaga Itabashi-ku, Tokyo, 173-8605, Japan. okamo@kk.iij4u.or.jp.ORCID http://orcid.org/0000-0003-0961-1791
Yuka OkadaDepartment of Surgery, Teikyo University School of Medicine, 2-11-1 Kaga Itabashi-ku, Tokyo, 173-8605, Japan.
Kohei OhnoDepartment of Surgery, Teikyo University School of Medicine, 2-11-1 Kaga Itabashi-ku, Tokyo, 173-8605, Japan.
Takahiro YagiDepartment of Surgery, Teikyo University School of Medicine, 2-11-1 Kaga Itabashi-ku, Tokyo, 173-8605, Japan.
Mitsuo TsukamotoDepartment of Surgery, Teikyo University School of Medicine, 2-11-1 Kaga Itabashi-ku, Tokyo, 173-8605, Japan.
Takuya AkahaneDepartment of Surgery, Teikyo University School of Medicine, 2-11-1 Kaga Itabashi-ku, Tokyo, 173-8605, Japan.
Ryu ShimadaDepartment of Surgery, Teikyo University School of Medicine, 2-11-1 Kaga Itabashi-ku, Tokyo, 173-8605, Japan.
Tamuro HayamaDepartment of Surgery, Teikyo University School of Medicine, 2-11-1 Kaga Itabashi-ku, Tokyo, 173-8605, Japan.
Takeshi TsuchiyaDepartment of Surgery, Teikyo University School of Medicine, 2-11-1 Kaga Itabashi-ku, Tokyo, 173-8605, Japan.
Keijiro NozawaDepartment of Surgery, Teikyo University School of Medicine, 2-11-1 Kaga Itabashi-ku, Tokyo, 173-8605, Japan.
Keiji MatsudaDepartment of Surgery, Teikyo University School of Medicine, 2-11-1 Kaga Itabashi-ku, Tokyo, 173-8605, Japan.
Tsuyoshi IshidaDepartment of Pathology, Teikyo University School of Medicine, Tokyo, Japan.
Fukuo KondoDepartment of Pathology, Teikyo University School of Medicine, Tokyo, Japan.
Yojiro HashiguchiDepartment of Surgery, Teikyo University School of Medicine, 2-11-1 Kaga Itabashi-ku, Tokyo, 173-8605, Japan.
Teikyo University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundA tumor composed exclusively or predominantly of human melanin black 45 (HMB45)-positive epithelioid cells is called a perivascular epithelioid cell tumor (PEComa). We report a very rare case of a PEComa of the greater omentum. CASE PRESENTATION: MRI conducted to examine the orthopedic disease of the patients, a 49-year-old Japanese woman, also identified a tumor in her pelvis. A CT scan revealed a tumor mass on the right side of the pelvic floor and clear nutrient vessels originating from the splenic and celiac arteries. An omental primary tumor or accessory spleen was thus suspected, and tumor resection was performed. The tumor was a light brown solid tumor with a smooth margin, measuring 5.2 × 3.8 × 3.5 cm. Histopathologically, the tumor was composed mainly of spindle and epithelioid cells, and large and small blood vessel formation was observed. In the immunohistochemical staining, tumor cells were positive for human melanin black 45 (HMB-45) and Melan-A and partially positive for alpha-smooth muscle actin. The final diagnosis was PEComa of the greater omentum.

conclusionsAlthough omental PEComa is very rare, it should be considered as a differential disease of an omental primary tumor.

Indexed as

OmentumActinsFemalegp100 Melanoma AntigenHumansImmunohistochemistryMART-1 AntigenMelanoma-Specific AntigensMiddle AgedPeritoneal NeoplasmsPerivascular Epithelioid Cell NeoplasmsPrognosisACTA2 protein, humanActinsgp100 Melanoma AntigenMART-1 AntigenMelanoma-Specific AntigensMLANA protein, humanPMEL protein, humanAngiomyolipomaHMB45Human melanin black 45Omental PEComaOmental primary tumorPEComaPerivascular epithelioid cell tumor

Identifiers

PMID29921303
PMCPMC6008935
OpenAlexW2809582751

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.