Evidence map›Paper›PMID 41691558›Full record

ArticleClinical journal of gastroenterology2026

Endocrine carcinoma with amphicrine carcinoma component at esophagogastric junction.

Ippei Tanaka, Yasuko Fujita, Haruhiro Inoue, Kei Ushikubo, Kazuki Yamamoto, Yohei Nishikawa, Mayo Tanabe, Manabu Onimaru, Koji Otsuka

Abstract readCase Reports
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In one paragraph

Article in Clinical journal of gastroenterology, 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

9 authors.

Ippei TanakaDigestive Disease Center, Showa University Koto Toyosu Hospital, 5-1-38 Toyosu, Koto-ku, Tokyo, 135-8577, Japan. ippeitanaka777@gmail.com.ORCID http://orcid.org/0000-0001-8776-6663
Yasuko FujitaDepartments of Pathology and Molecular Diagnostics, Aichi Cancer Center, Nagoya, Japan.
Haruhiro InoueDigestive Disease Center, Showa University Koto Toyosu Hospital, 5-1-38 Toyosu, Koto-ku, Tokyo, 135-8577, Japan.
Kei UshikuboDigestive Disease Center, Showa University Koto Toyosu Hospital, 5-1-38 Toyosu, Koto-ku, Tokyo, 135-8577, Japan.
Kazuki YamamotoDigestive Disease Center, Showa University Koto Toyosu Hospital, 5-1-38 Toyosu, Koto-ku, Tokyo, 135-8577, Japan.
Yohei NishikawaDigestive Disease Center, Showa University Koto Toyosu Hospital, 5-1-38 Toyosu, Koto-ku, Tokyo, 135-8577, Japan.
Mayo TanabeDigestive Disease Center, Showa University Koto Toyosu Hospital, 5-1-38 Toyosu, Koto-ku, Tokyo, 135-8577, Japan.
Manabu OnimaruDigestive Disease Center, Showa University Koto Toyosu Hospital, 5-1-38 Toyosu, Koto-ku, Tokyo, 135-8577, Japan.
Koji OtsukaDigestive Disease Center, Showa University Koto Toyosu Hospital, 5-1-38 Toyosu, Koto-ku, Tokyo, 135-8577, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Amphicrine carcinoma is a rare malignancy exhibiting both endocrine and exocrine differentiation within the same tumor cells. We report a case of a 70-year-old male who underwent screening upper endoscopy, which revealed a 15 mm depressed lesion with a reddish elevated margin at the esophagogastric junction. Narrow-band imaging with magnification demonstrated an irregular, densely packed vascular pattern, suggesting malignancy. Endoscopic ultrasound indicated third-layer disruption, raising suspicion of submucosal invasion. Endoscopic resection was performed after informed consent. Histopathological analysis confirmed submucosal invasion and identified three tumor components: (1) an endocrine carcinoma component with a solid-nest structure, (2) a glandular component, and (3) a goblet cell-like signet ring cell carcinoma component. Immunohistochemistry revealed synaptophysin, INSM1, and CD56 positivity in all components, while MUC2 was expressed in the signet ring cell carcinoma component and partially in the others. The tumor exhibited a high Ki-67 labeling index, indicating aggressive proliferation. Based on these findings, the lesion was diagnosed as an endocrine carcinoma with an amphicrine carcinoma component. Additional surgery confirmed no residual tumor or lymph node metastasis. Given the rarity of amphicrine carcinoma and the limited understanding of its clinical behavior, further research is necessary to determine its prognosis and optimal management strategies.

Indexed as

CarcinomaEsophageal NeoplasmsEsophagogastric JunctionStomach NeoplasmsAgedHumansMaleAmphicrine carcinomaEndoscopic submucosal dissectionEsophagogastric junctionMixed neuroendocrine-non-neuroendocrine neoplasmNeuroendocrine carcinoma

Identifiers

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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.