[Micrometastasis in Gastric Cancer]

Area of Science:

• Oncology
• Surgical Oncology
• Cancer Research

Background:

• Gastric cancer remains a significant global health challenge, particularly in Eastern Asia, despite declining incidence rates.
• Standard surgical treatment for advanced gastric cancer involves radical gastrectomy with D2 lymphadenectomy.
• Tumor recurrence is common even after complete R0 resection, limiting patient survival.

Purpose of the Study:

• To review the prognostic significance of micrometastasis in gastric cancer.
• To discuss the presence and detection of micrometastasis in lymph nodes, bone marrow, peritoneal cavity, and blood.
• To explore the current research on circulating tumor cells (CTCs) in peripheral blood.

Main Methods:

• Review of current knowledge and evidence on micrometastasis in gastric cancer.
• Analysis of studies utilizing immunohistochemistry and molecular techniques.
• Discussion of findings related to micrometastasis in lymph nodes, bone marrow, and peritoneal fluid.
• Examination of research on circulating tumor cells in peripheral blood.

Main Results:

• Micrometastasis, defined as isolated tumor cells, is detectable in various body compartments beyond lymph nodes, including bone marrow, peritoneal cavity, and blood.
• The presence of micrometastasis has been shown to be a clinically relevant factor for detecting gastric cancer recurrence.
• Immunohistochemistry and molecular studies confirm the widespread presence of micrometastasis.

Conclusions:

• Micrometastasis is a critical factor influencing recurrence and survival in gastric cancer patients.
• Further research into micrometastasis and circulating tumor cells is essential for improving early detection and patient management.
• Understanding the prognostic value of micrometastasis can lead to more effective treatment strategies for advanced gastric cancer.