Endoscopic ultrasound-guided tissue acquisition

Area of Science:

• Gastroenterology
• Oncology
• Medical Imaging

Background:

• Endoscopic ultrasound (EUS) is vital for tissue acquisition in gastrointestinal tumors.
• Fine-needle aspiration (FNA) is standard for diagnosis, but limitations exist.
• Increasing need for molecular marker analysis drives demand for core biopsies.

Purpose of the Study:

• To highlight the advantages of EUS-guided fine-needle biopsy (EUS-FNB) over FNA.
• To emphasize the importance of EUS-FNB for molecular profiling.
• To advocate for standardized protocols in needle selection for EUS procedures.

Main Methods:

• Review of EUS-guided tissue acquisition techniques.
• Comparison of FNA and EUS-FNB performance characteristics.
• Discussion of algorithmic approaches for needle selection.

Main Results:

• EUS-FNB provides core tissue samples suitable for molecular analysis.
• EUS-FNB can overcome limitations of FNA, such as dependence on onsite cytopathologists.
• Standardized needle selection improves procedural efficiency and resource utilization.

Conclusions:

• EUS-FNB is superior to FNA for comprehensive tumor characterization and personalized therapy.
• Implementing evidence-based techniques and appropriate specimen handling is essential for optimal patient outcomes.
• Developing unit-specific algorithms for needle selection enhances procedural efficiency.