[Prognostic factors for gastric cancer without lymph node involvement]

Area of Science:

• Oncology
• Pathology
• Surgical Oncology

Context:

• Gastric cancer prognosis is heavily influenced by lymph node status.
• While node-negative (N0) gastric cancer generally indicates a better outlook, a subset of these patients experiences unfavorable outcomes.
• Identifying specific prognostic indicators within the N0 subgroup is crucial for accurate risk stratification.

Purpose:

• To investigate demographic and morphological variables predicting prognosis in N0 gastric carcinoma.
• To identify independent prognostic factors in surgically treated N0 gastric cancer patients.

Summary:

• A review of 459 gastrectomies for gastric cancer revealed 32% were N0, with a 71% five-year survival rate.
• Bivariate analysis identified age, tumor size, wall infiltration, pathological type, lymphovascular invasion, lymph node yield, and TNM stage as prognostic indicators.
• Multivariate analysis confirmed gastric wall infiltration, poor differentiation, lymphovascular invasion, lymph node yield, and tumor size as independent prognostic factors.

Impact:

• Establishes key independent prognostic factors for N0 gastric cancer, including tumor size, infiltration, differentiation, and lymphovascular invasion.
• Provides valuable information for refining risk assessment and treatment strategies for node-negative gastric cancer patients.
• Contributes to a better understanding of tumor biology and patient outcomes in a significant subset of gastric cancer cases.