Endoscopy: current state and future trends in tumor diagnosis

Area of Science:

• Gastroenterology and Endoscopic Technology
• Oncology and Cancer Diagnostics
• Medical Imaging and Visualization

Background:

• Gastrointestinal endoscopy has seen significant advancements in the past decade, enhancing diagnostic capabilities.
• Early-stage cancer detection is now limited by screening availability rather than technical limitations.
• New endoscopic tools offer improved visualization and characterization of gastrointestinal lesions.

Purpose of the Study:

• To review recent technological advancements in gastrointestinal endoscopy.
• To highlight the diagnostic and therapeutic applications of novel endoscopic techniques.
• To discuss the evolving role of endoscopy in cancer management.

Main Methods:

• High-resolution videoendoscopy with in vivo staining for lesion delineation.
• Capsule endoscopy for small bowel examination.
• Endoscopic ultrasound (EUS) for tumor staging, including 3D-EUS.
• Optical coherence tomography (OCT) and confocal microscopy for in vivo tissue visualization.

Main Results:

• High-resolution endoscopy can detect tumors smaller than 5 mm.
• Capsule endoscopy provides comprehensive small bowel imaging but is contraindicated in stenosis.
• EUS offers ~90% accuracy in T- and N-staging of gastrointestinal tumors, aided by fine-needle aspiration.
• OCT and confocal microscopy provide micro-architectural and cellular details, respectively, advancing towards optical biopsy.

Conclusions:

• Modern endoscopy significantly improves early gastrointestinal cancer detection and characterization.
• Advanced imaging techniques like EUS, OCT, and confocal microscopy enhance diagnostic precision and therapeutic planning.
• Endoscopy is evolving towards real-time, in vivo tissue analysis, potentially reducing the need for invasive biopsies.