Bladder Stones in Women: Causes, Symptoms, Diagnosis, and Prevention

Overview

Bladder stones (vesical calculi) are less common in women than men (due to shorter urethra, less outlet obstruction) but do occur. They form when urine becomes supersaturated with stone‑forming salts (calcium oxalate, phosphate, uric acid, struvite).

Risk Factors in Women

• Recurrent UTIs: Urease‑producing bacteria (Proteus, Klebsiella) → alkaline urine → struvite stones.
• Dehydration / low urine volume: Concentrated urine → crystallization.
• Bladder outlet dysfunction: Neurogenic bladder, pelvic organ prolapse, prior anti‑incontinence surgery, urethral stricture.
• Foreign bodies: Sutures, mesh, stents, forgotten catheters → nidus for stones.
• Metabolic conditions: Hypercalciuria, hyperuricosuria, hypocitraturia, primary hyperparathyroidism.
• Diabetes / insulin resistance: Acidic urine → uric acid stones.
• Immobility / catheter dependence.

Symptoms

• Suprapubic / lower abdominal pain.
• Dysuria, frequency, urgency.
• Intermittent stream, positional voiding difficulty.
• Hematuria (microscopic or gross).
• Recurrent UTIs despite treatment.
• Asymptomatic (incidental on imaging).

Diagnosis

• Urinalysis + culture.
• Non‑contrast CT (gold standard; detects all compositions).
• Ultrasound (radiation‑free; misses small/ureteric stones).
• Cystoscopy (direct visualization; therapeutic).

Treatment

• Small stones (<5–10 mm): Hydration, alpha‑blockers (tamsulosin) may aid passage; alkalinization for uric acid stones (potassium citrate).
• Larger/struvite stones: Cystolitholapaxy (laser/pneumatic/ultrasonic fragmentation + irrigation) via cystoscope.
• Open cystolithotomy: Rare; very large stones, complex anatomy.
• Address underlying cause: Treat UTI, relieve obstruction, correct metabolic abnormalities.

Prevention

• Fluid intake ≥2.5 L/day (urine output >2 L).
• Prompt, complete UTI treatment.
• Manage neurogenic bladder (clean intermittent catheterization, anticholinergics, botox).
• Dietary: normal calcium, low sodium, moderate protein, citrate‑rich foods (citrus).
• Treat metabolic abnormalities per 24‑hr urine stone risk profile.