Abstract
It is now possible to perform microscopic imaging of living cells from both normal mucosa and malignant tissue in the gastrointestinal tract. Endocytoscopy is a catheter-type contact endoscope that has more than 1000-fold magnifying power and can pass through the working channel of the straight-view endoscope. In esophageal cells, the nucleus, cell body, and even the nucleolus were clearly distinguished with high-resolution images comparable with those of conventional cytology. This novel technology has the potential to provide histologic diagnoses during endoscopic examinations, similar to those obtained currently by conventional histology techniques.
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