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Takemoto H, Kotachi T, Teshima H, Tamari H, Tsuboi A, Tanaka H, Yamashita K, Urabe Y, Ishikawa A, Oka S. Verrucous gastritis-like lesion in intramucosal Helicobacter pylori-uninfected signet ring cell carcinoma with poorly differentiated adenocarcinoma. Clin J Gastroenterol 2024:10.1007/s12328-024-01952-9. [PMID: 38520641 DOI: 10.1007/s12328-024-01952-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Accepted: 03/10/2024] [Indexed: 03/25/2024]
Abstract
In Japan, accessible Helicobacter pylori (Hp) eradication therapy is associated with an increase in the prevalence of gastric cancers (GCs) in Hp uninfected stomachs. Signet ring cell carcinoma (SRCC) is the most common of these GCs. Intramucosal SRCC with poorly differentiated adenocarcinoma (PDA) occurring in Hp uninfected gastric mucosa is rare; furthermore, many Hp uninfected pure SRCCs exhibit discoloration and flat or slightly depressed lesions, and morphological elevation is relatively rare. We report a case of intramucosal SRCC with PDA with an elevated, verrucous gastritis-like lesion in a 57-year-old male patient. In the present case, the PDA area showed dense tumor cell growth and coexisting desmoplastic and fibrotic reactions. Histopathology and immunohistochemical staining identified extensive fibromuscular obliteration with smooth muscle bundles extending from the muscularis mucosa into the lamina propria. The patient underwent curative endoscopic submucosal dissection. The reporting and analysis of such rare cases may lead to a better understanding of the characteristics of advanced Hp uninfected GCs.
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Affiliation(s)
- Hiroki Takemoto
- Department of Gastroenterology, Hiroshima University Hospital, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8553, Japan
| | - Takahiro Kotachi
- Department of Gastroenterology, Hiroshima University Hospital, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8553, Japan.
| | - Hajime Teshima
- Department of Gastroenterology, Hiroshima University Hospital, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8553, Japan
| | - Hirosato Tamari
- Department of Gastroenterology, Hiroshima University Hospital, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8553, Japan
| | - Akiyoshi Tsuboi
- Department of Gastroenterology, Hiroshima University Hospital, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8553, Japan
| | - Hidenori Tanaka
- Department of Gastroenterology, Hiroshima University Hospital, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8553, Japan
| | - Ken Yamashita
- Department of Gastroenterology, Hiroshima University Hospital, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8553, Japan
| | - Yuji Urabe
- Department of Gastrointestinal Endoscopy and Medicine, Hiroshima University Hospital, Hiroshima, Japan
| | - Akira Ishikawa
- Department of Molecular Pathology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Shiro Oka
- Department of Gastroenterology, Hiroshima University Hospital, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8553, Japan
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