[ENDOCYTOSCOPY--NOVEL ENDOSCOPIC DIAGNOSTICS APPROACH: PRINCIPLES AND PROCEDURE].

Area of Science:

• Gastroenterology and Pulmonology
• Medical Imaging
• Pathology

Context:

• Endocytoscopy provides up to 1150x magnification for real-time visualization of gastrointestinal and respiratory mucosa.
• It is considered an in vivo "optical biopsy" alongside confocal laser endomicroscopy.
• Currently, endocytoscopy is an experimental diagnostic method utilizing prototype devices.

Purpose:

• To explore the diagnostic capabilities of endocytoscopy in precancerous conditions and early intramucosal cancers.
• To detail the application of endocytoscopy in the esophagus, stomach, colon, and bronchial tree.
• To describe the use of vital stains like methylene blue and toluidine blue for enhanced visualization.

Summary:

• Endocytoscopes, either "baby-scopes" or integrated types, offer varying magnification levels for mucosal examination.
• Vital staining with methylene blue or toluidine blue is crucial for visualizing cellular structures.
• Tissue and cellular markers, including papillae, crypts, glands, and nuclei characteristics, can be assessed in real-time.

Impact:

• Endocytoscopy has the potential to revolutionize early cancer detection and precancerous condition diagnosis.
• It offers a minimally invasive alternative to traditional ex vivo pathology.
• Standardized protocols for vital staining and interpretation are essential for clinical adoption.