Gastric adenomatous polyps are rare findings in upper gastrointestinal endoscopy; however, they are associated strongly with malignant transformation. Few series describe the oncogenic characteristics of gastric adenomas. In the present study, we immunohisto-chemically assessed the expression of cyclooxygenase (COX)-2, beta-catenin, p53, and adenomatous polyposis coli (APC) in paraffin-embedded specimens of 14 gastric adenomas. Control samples of normal gastric tissue and gastric adenocarcinoma also were analyzed. Of the adenomas, 7 demonstrated overexpression of COX-2, and all demonstrated nuclear p53 accumulation. Accumulation of beta-catenin in the nucleus and cytoplasm was detected in 38% (3/8) of specimens. Loss of APC staining was observed in 50% (4/8). Similar alterations in oncoprotein expression were seen in gastric cancers but not in normal control sections. Gastric adenomas display alterations in the expression of COX-2, beta-catenin, and APC similar to those seen in adenocarcinomas; however, accumulation of p53 was significantly more common in adenomas than in cancers.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1309/263A-4PQ8-3R9Q-CRUF | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Gastric polyps are not created equal: Know your enemy.
World J Gastroenterol
January 2025
Department of Gastroenterology and Hepatology, American University of Beirut Medical Center, Beirut 1107 2020, Lebanon.
Gastric polyps are commonly detected during upper gastrointestinal endoscopy. They are most often benign and rarely become malignant. Nevertheless, adequate knowledge, diagnostic modalities, and management strategies should be the endoscopist's readily available "weapons" to defeat the potentially malignant "enemies".
View Article and Find Full Text PDFComparison of GastroPanel and GENEDIA in Diagnosing Infection and Gastric Lesions.
J Cancer Prev
December 2024
Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea.
Serological tests for needs local validation as the diagnostic accuracy may vary depending on the prevalence of . . This study examined the diagnostic performance of two ELISA, GastroPanel (GastroPanel ELISA; Biohit Oyj) and GENEDIA (GENEDIA .
View Article and Find Full Text PDFTwo independent families with de novo whole APC gene deletion and intellectual disability: a case report.
Hered Cancer Clin Pract
January 2025
First Department of Medicine, Hamamatsu University School of Medicine, Hamamatsu, 431-3192, Japan.
Background: Familial adenomatous polyposis (FAP) is an autosomal dominant colorectal tumour syndrome characterised by the formation of multiple adenomatous polyps throughout the colon. It is important to understand the extracolonic phenotype that characterizes FAP. Most previous case reports of patients with both FAP and intellectual disability (ID) have described deletions in all or part of chromosome 5q, including the APC locus.
View Article and Find Full Text PDFThe challenge of preventing gastric cancer in patients under surveillance for familial adenomatous polyposis.
Fam Cancer
January 2025
Department of Gastroenterology and Hepatology, Amsterdam UMC, University of Amsterdam, Amsterdam Gastroenterology Endocrinology Metabolism, Cancer Center Amsterdam, Amsterdam, The Netherlands.
Several extra-colonic manifestations, including duodenal polyposis and desmoid tumors, are well-described manifestations in familial adenomatous polyposis (FAP). More recently, an increase in gastric cancer diagnoses has been observed in FAP. This case series presents nine patients with FAP who were diagnosed with gastric cancer at our FAP expertise center, of whom eight were diagnosed between 2017 and 2023, while before 2017 the only diagnosis of gastric cancer was in 2001.
View Article and Find Full Text PDFExploring the Differential Diagnosis of Adrenal Adenoma in the Context of Situs Ambiguous: A Clinical Case Study.
Medicina (Kaunas)
December 2024
Medical College, Medical University of Plovdiv, 4002 Plovdiv, Bulgaria.
Situs anomalies, including situs inversus and situs ambiguous (SAMB), are rare congenital conditions typically noted in pediatric populations, with SAMB being particularly uncommon in adults. This case study addresses the incidental discovery of situs ambiguous with polysplenia in a 65-year-old man evaluated for suspected adrenal adenoma. The patient's medical history included benign prostatic hyperplasia and tuberculous pleurisy.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!