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| Ureteroscopy ： ウィキペディア英語版 |
Ureteroscopy
Ureteroscopy is an examination of the upper urinary tract, usually performed with a ureteroscope that is passed through the urethra and the bladder, and then directly into the ureter; usually the lower 2/3 of the ureter is accessible by this procedure. The procedure is useful in the diagnosis and treatment of disorders such as kidney stones. Smaller stones in the bladder or lower ureter can be removed in one piece, while bigger ones are usually broken before removal during ureteroscopy.
The examination may be performed with either a flexible or a rigid fibre optic device while the patient is under a general anesthetic. The patient is usually free to go home after the examination.
In pyeloscopy, the endoscope is designed to reach all the way to the renal pelvis (also called ''pyelum''), thereby allowing visualisation of the entire drainage system of the kidney.〔(Laser Stone Surgery using Flexible Pyeloscopy ) at Kidney Stone Clinic, Dr. Raymond Ko. Retrieved September 2011〕 The endoscope can contain an instrument port which allows for introduction of laser fibres to fragment stones, and micro-baskets to retrieve stone fragments.〔 Kidney stones up to 2 cm in size can be treated by pyeloscopy.〔
==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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