How long does it take for a urethral stone to pass?

Urethral calculi commonly present with marked pain during urination, often radiating to the glans penis. Subsequently, patients may experience pain in the perineal and scrotal regions. There is typically significant localized pain and tenderness at the site of the calculus; if infection is present, local pain intensifies, purulent discharge appears at the urethral meatus, and bladder irritation symptoms (e.g., urgency, frequency, dysuria) worsen. So, how long does it take for a urethral calculus to pass? The following section addresses this question.

How long does it take for a urethral calculus to pass?

The time required for spontaneous passage of a urethral calculus depends on multiple factors, including patient sex, stone size, and stone hardness—requiring comprehensive assessment. In general, women typically pass urethral calculi spontaneously within 24 hours; however, in men, spontaneous passage usually takes approximately 3–5 days. If the stone is excessively large, it may remain lodged in the urethra indefinitely without spontaneous expulsion.

In women, urethral calculi larger than 1 cm frequently become impacted within the urethra; without intervention such as extracorporeal shock wave lithotripsy (ESWL) or urethroscopy for stone extraction, spontaneous passage is unlikely. In men, urethral calculi exceeding 1 cm generally require cystoscopy or ureteroscopy with lithotripsy and stone extraction to achieve complete stone removal.

Patients with prior history of stone passage may spontaneously expel calculi smaller than 1 cm; however, stones larger than 1.2 cm rarely pass spontaneously and typically necessitate surgical intervention for removal. Additionally, patients are advised to maintain adequate hydration, engage in appropriate physical activity to enhance metabolic turnover, and undergo regular health check-ups.

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