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Resectoscopes designed for transurethral removal or biopsy of lesions of the bladder, prostate, or urethra; they typically include electric cautery and coagulating capabilities. Urinary tract resectoscopes usually consist of an outer sheath, a lighting system (e.g., fiberoptic), a wide-angle telescope, electrosurgical wire loops, and a working channel for catheters and operative devices. They may also include a television camera on the distal tip, typically in the form of a microchip (a charge-coupled device [CCD]). The image is electronically transmitted through wires in the endoscope for external processing, display, and recording of video images.
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