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Kidney stones result from the accumulation of various hard mineral crystals, forming solid masses of differing types and sizes. These typically form in the calyces or renal pelvis, leading to highly concentrated urine and mineral precipitation. Kidney stones have a propensity for recurrence.
Kidney stones can form due to altered concentrations of salts, minerals, and other substances such as calcium, oxalic acid, and uric acid in urine, exceeding the liquid's capacity to dissolve or dilute them, leading to stone formation.
Other contributing factors include dietary habits (e.g., high intake of salt, sugar, and high-protein foods), insufficient daily water intake, urinary tract infections, metabolic disorders, and the use of certain medications for conditions like gout, hyperthyroidism, diabetes, obesity, or hypertension. Excessive supplementation with vitamins D or C can also contribute.
Kidney stones are often asymptomatic until they cause complications such as recurrent infections or urinary tract obstruction. When symptoms occur, they include:
Treatment for kidney stones depends on their type and size:
For very small stones, increased fluid intake may facilitate spontaneous passage. Certain types of stones may also be dissolved with medication.
Used for stones up to 2 cm, ESWL employs shock waves to fragment the stone for urinary passage. Patients may experience mild discomfort and other side effects; hence, treatment should be performed by a skilled specialist.
An endoscope is inserted into the ureter up to the kidney, and instruments are used to fragment the stone into smaller pieces for passage.
Percutaneous Nephrolithotomy (PCNL) is utilized for large stones unresponsive to other methods. The surgeon makes a small incision in the patient's back, inserts an endoscope to fragment the stone, and removes the pieces through the same incision. This complex procedure requires a highly skilled specialist.
Revised: September 19, 2022