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Discrepancy between clinical and pathological lymph node evaluation in Epstein-Barr virus-associated gastric cancers
H Ojima1, T Fukuda, T Nakajima
1First Department of Surgery, Gunma University School of Medicine, Japan.
Anticancer Research
|September 1, 1996
Summary
Epstein-Barr virus (EBV)-associated gastric cancers show distinct lymph node characteristics. Surgeons should avoid overestimating the clinical stage of EBV-positive gastric cancer due to a strong host immune response.
Area of Science:
- Oncology
- Virology
- Pathology
Background:
- Gastric cancer is a significant global health concern.
- Epstein-Barr virus (EBV) is implicated in a subset of gastric cancers.
- Poorly differentiated gastric adenocarcinomas represent an aggressive subtype.
Purpose of the Study:
- To investigate the clinicopathological features of EBV-associated gastric cancers.
- To analyze the relationship between EBV status and lymph node evaluation in poorly differentiated gastric adenocarcinomas.
Main Methods:
- Studied 412 patients with poorly differentiated gastric adenocarcinoma.
- Detected Epstein-Barr virus (EBV) infection using in situ hybridization for EBV-encoded small RNA.
- Compared clinicopathological data between EBV-positive and EBV-negative gastric cancers.
Main Results:
- EBV genomes were detected in 20.1% (83/412) of gastric cancers.
- A significant discrepancy was observed in lymph node evaluation between EBV-positive and EBV-negative cancers.
- EBV-positive cancers showed a strong host immune reaction in regional lymph nodes.
Conclusions:
- EBV-associated gastric cancers exhibit unique clinicopathological characteristics, particularly concerning lymph node involvement.
- The findings suggest a strong host immune response in the lymph nodes of EBV-positive gastric cancers.
- Clinicians should be cautious about overestimating the clinical stage of EBV-associated gastric cancer.