A case of gastric hyperplastic polyp with malignant transformation

Kotaro Shibahara, Yukiaki Haraguchi, Isamu Sasaki, Hideyasu Kiyonari, Tatuhiro Oishi, Akinori Iwashita, Yoshihiko Maehara, Keizo Sugimachi

Research output: Contribution to journalArticle

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Abstract

In this paper we report a case of hyperplastic polyp with malignant transformation. The patient was followed up by annual radiographic and endoscopic examination during 9 years. The first gastroscopy revealed a semi-pedunculated polyp beneath the esophageal-cardiac junction, 1.5cm in diameter and slightly reddish with smooth surface. Histological findings showed a hyperplastic polyp. There was slight change in size, but no change in histological examination of the lesion during the follow-up. In 1996, the biopsy specimen showed an atypical epithelium and the polyp was removed by snear polypectomy. A microscopic examination revealed a well-differentiated adenocarcinoma. Immunohistochemically, p53 and Ki-67 immunostaining showed positive in the carcinoma portion of the adenocarcinoma bearing a hyperplastic polyp in the stomach.

Original languageEnglish
Pages (from-to)319-321
Number of pages3
JournalHepato-gastroenterology
Volume52
Issue number61
Publication statusPublished - Jan 1 2005

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Polyps
Stomach
Adenocarcinoma
Gastroscopy
Epithelium
Carcinoma
Biopsy

All Science Journal Classification (ASJC) codes

  • Hepatology
  • Gastroenterology

Cite this

Shibahara, K., Haraguchi, Y., Sasaki, I., Kiyonari, H., Oishi, T., Iwashita, A., ... Sugimachi, K. (2005). A case of gastric hyperplastic polyp with malignant transformation. Hepato-gastroenterology, 52(61), 319-321.

A case of gastric hyperplastic polyp with malignant transformation. / Shibahara, Kotaro; Haraguchi, Yukiaki; Sasaki, Isamu; Kiyonari, Hideyasu; Oishi, Tatuhiro; Iwashita, Akinori; Maehara, Yoshihiko; Sugimachi, Keizo.

In: Hepato-gastroenterology, Vol. 52, No. 61, 01.01.2005, p. 319-321.

Research output: Contribution to journalArticle

Shibahara, K, Haraguchi, Y, Sasaki, I, Kiyonari, H, Oishi, T, Iwashita, A, Maehara, Y & Sugimachi, K 2005, 'A case of gastric hyperplastic polyp with malignant transformation', Hepato-gastroenterology, vol. 52, no. 61, pp. 319-321.
Shibahara K, Haraguchi Y, Sasaki I, Kiyonari H, Oishi T, Iwashita A et al. A case of gastric hyperplastic polyp with malignant transformation. Hepato-gastroenterology. 2005 Jan 1;52(61):319-321.
Shibahara, Kotaro ; Haraguchi, Yukiaki ; Sasaki, Isamu ; Kiyonari, Hideyasu ; Oishi, Tatuhiro ; Iwashita, Akinori ; Maehara, Yoshihiko ; Sugimachi, Keizo. / A case of gastric hyperplastic polyp with malignant transformation. In: Hepato-gastroenterology. 2005 ; Vol. 52, No. 61. pp. 319-321.
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