Surveillance for Gastric Cancer

Area of Science:

• Oncology
• Gastroenterology
• Surgical Oncology

Background:

• Gastric cancer surveillance post-surgical resection lacks standardized, evidence-based guidelines.
• Existing Western and Eastern guidelines offer varying approaches to follow-up.
• Early gastric cancer and endoscopic resections present unique surveillance challenges.

Purpose of the Study:

• To critically evaluate current National Comprehensive Cancer Network (NCCN) and other international guidelines for gastric cancer surveillance after surgery.
• To assess the efficacy of intensive surveillance strategies in improving survival outcomes.
• To review follow-up modalities and discuss implications of new treatments for recurrent/metastatic disease.

Main Methods:

• Comprehensive literature review of existing gastric cancer surveillance guidelines.
• Analysis of studies evaluating the impact of intensive surveillance on survival.
• Examination of follow-up protocols for early gastric cancer and post-endoscopic resection.
• Brief review of advancements in recurrent and metastatic gastric cancer treatment.

Main Results:

• Intensive surveillance strategies for gastric cancer have not demonstrated an improvement in patient survival.
• Current guidelines, including NCCN, may not be optimized for early detection or improved outcomes.
• Effective follow-up protocols for early gastric cancer and post-endoscopic resection require further investigation.

Conclusions:

• There is a need to re-evaluate current gastric cancer surveillance guidelines based on survival data.
• Intensive surveillance does not appear to enhance survival post-gastric cancer resection.
• Future strategies should consider the unique aspects of early gastric cancer and evolving treatment modalities.