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Percutaneous nephrolithotomy (PCNL) is a minimally-invasive procedure to remove stones from the kidney by a small puncture wound (up to about 1 cm) through the skin. It is most suitable to remove stones of more than 2 cm in size and which are present near the pelvic region. It is usually done under general anesthesia or spinal anesthesia.
Lithotomy from Greek for "lithos" and "tomos" (), is a surgical method for removal of calculi, stones formed inside certain organs, such as the urinary tract (kidney stones), bladder (bladder stones), and gallbladder (), that cannot exit naturally through the urinary system or biliary tract.
A number of important medical conditions are caused by stones: [citation needed] Nephrolithiasis (kidney stones) Can cause hydronephrosis (swollen kidneys) and kidney failure; Can predispose to pyelonephritis (kidney infections) Can progress to urolithiasis; Urolithiasis (urinary bladder stones) Can progress to bladder outlet obstruction
Kidney stones are primarily composed of calcium salts, with the most common being calcium oxalate (70-80%), followed by calcium phosphate and uric acid. When urine contains high concentrations of these ions, they can form crystals and eventually stones. [41] The formation of kidney stones occurs in three main phases: [41]
A kidney stone is a hard object, which can be as small as a grain of salt or as big as a golf ball, made from chemicals—calcium oxalate, uric acid, struvite, and cystine—found in our urine ...
Lithotripsy is a procedure involving the physical destruction of hardened masses like kidney stones, [1] bezoars [2] or gallstones, which may be done non-invasively. The term is derived from the Greek words meaning "breaking (or pulverizing) stones" (litho-+ τρίψω [tripso]).
Kidney stones are caused by high levels of the minerals calcium, oxalate, and phosphorus in urine. These minerals are normally found in urine and do not cause problems at low levels.
The procedure is useful in the diagnosis and treatment of disorders such as kidney stones and urothelial carcinoma of the upper urinary tract. [1] Smaller stones in the bladder or lower ureter can be removed in one piece, while bigger ones are usually broken before removal during ureteroscopy. [citation needed]