Demyelinating disease. A demyelinating disease is any disease of the nervous system in which the myelin sheath of neurons is damaged. This damage impairs the conduction of signals in the affected nerves. In turn, the reduction in conduction ability causes deficiency in sensation, movement, cognition, or other functions depending on which nerves are involved.
For other uses, see Reamer (disambiguation). A reamer is a type of rotary cutting tool used in metalworking. Precision reamers are designed to enlarge the size of a previously formed hole by a small amount but with a high degree of accuracy to leave smooth sides.
RIRS is the treatment of choice when the cyst can be reached from the draining portion of the kidney basin. A small telescope goes through the natural opening of the body, into the ureter and up into the kidney. A cut is made with a laser, and the cyst is opened into the draining system. A small tube (stent) is left in the ureter for about two weeks to allow proper healing. RIRS is an outpatient procedure.