A 13 mm (or 1.3 cm) kidney stone is relatively large, and it may not pass through the urinary tract on its own without medical intervention. The likelihood of a stone passing naturally depends on several factors, including its size, shape, location, and the individual’s anatomy.
In general, kidney stones that are 4 mm (0.4 cm) or smaller have a higher chance of passing spontaneously. Stones larger than 6 mm (0.6 cm) are less likely to pass without medical assistance. A 13 mm stone is considered quite large, and its passage without intervention can be challenging and painful.
If you suspect you have a kidney stone or are experiencing symptoms such as severe pain, blood in the urine, or urinary tract obstruction, it is crucial to seek medical attention promptly. A healthcare provider can evaluate your condition, perform imaging studies, and recommend appropriate treatment options, which may include extracorporeal shock wave lithotripsy (ESWL), ureteroscopy, or percutaneous nephrolithotomy (PCNL) to break up or remove the stone.
Never attempt to treat a large kidney stone on your own without professional medical guidance, as it can lead to complications and worsen the condition.