Robert Wyllie Archives - Clinical Tree

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Colonoscopy, Polypectomy, and Related Techniques

The development of the colonoscope followed that of upper panendoscopes. Rigid proctoscopes were developed in the late 1800s, and fiberoptic techniques were adapted to visualize the sigmoid and descending colon in the 1960s. In the 1970s, the colonoscope was lengthened…

Esophagogastroduodenoscopy and Related Techniques

The earliest gastrointestinal endoscopies were performed in the late 1880s using rigid instruments, looking initially at the esophagus and rectum. The semiflexible gastroscope was developed in the early 1930s by Schindler and Wolf utilizing a series of short-focal-length lenses and…