Clinical Journal of Gastroenterology

, Volume 11, Issue 3, pp 245–250 | Cite as

Vimentin-positive gastric adenocarcinoma arising in a hyperplastic polyp

  • Shogo Kawaguchi
  • Tetsuro Yoshimura
  • Hirotake Sakuraba
  • Taka Asari
  • Yohei Sawada
  • Yasumitsu Araki
  • Koji Kikuchi
  • Toyohito Wada
  • Tomomi Kusumi
  • Shinsaku Fukuda
Case Report
  • 83 Downloads

Abstract

We report a case of vimentin-positive early gastric adenocarcinoma arising in a hyperplastic polyp (HP). A 72-year-old Japanese man was admitted for the detailed examination of a gastric polyp. He had a subtotal gastrectomy due to acute abdomen 12 years ago. Upper endoscopy revealed a pedunculated polyp measuring approximately 2 cm on the greater curvature of upper body of the remnant stomach. Magnifying endoscopy revealed that the microsurface pattern was irregular and partially absent accompanied with irregular microvessels at the upper end of the polyp. We speculated that the lesion was an adenocarcinoma arising in the HP. Endoscopic submucosal dissection (ESD) was performed. Histological examination of the ESD specimen revealed that the lesion consisted of well- to poorly differentiated adenocarcinoma at the protruding lesion and foveolar hyperplastic epithelia at the base of the polyp. Immunohistochemically, most of tumor cells that comprised poorly-differentiated adenocarcinoma were positive for both cytokeratin and vimentin. Although carcinomas have occasionally been found in HPs, the histological features of the present case are considered extremely unusual. To the best of our knowledge, this is the first case of vimentin-positive early gastric carcinoma arising in a HP.

Keywords

Early gastric cancer Adenocarcinoma Vimentin Hyperplastic polyp ESD 

Notes

Compliance with ethical standards

Conflict of interest

Shogo Kawaguchi, Tetsuro Yoshimura, Hirotake Sakuraba, Taka Asari, Yohei Sawada, Yasumitsu Araki, Koji Kikuchi, Toyohito Wada, Tomomi Kusumi and Shinsaku Fukuda declare that they have no conflict of interest.

Human/animal rights

All procedures followed have been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.

Informed consent

Informed consent was obtained from the patient for being included in the study.

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Copyright information

© Japanese Society of Gastroenterology 2018

Authors and Affiliations

  • Shogo Kawaguchi
    • 1
  • Tetsuro Yoshimura
    • 1
    • 2
  • Hirotake Sakuraba
    • 1
  • Taka Asari
    • 1
  • Yohei Sawada
    • 1
  • Yasumitsu Araki
    • 1
    • 2
  • Koji Kikuchi
    • 2
  • Toyohito Wada
    • 2
  • Tomomi Kusumi
    • 3
  • Shinsaku Fukuda
    • 1
  1. 1.Department of Gastroenterology and HematologyHirosaki University Graduate School of MedicineHirosakiJapan
  2. 2.Department of GastroenterologyAomori City HospitalAomoriJapan
  3. 3.Department of PathologyAomori City HospitalAomoriJapan

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