Question

A 40-year-old woman presents with left flank pain. Non-contrast CT KUB shows a 3-4 mm distal ureteric stone. She is afebrile, hemodynamically stable, and shows no signs of obstruction or infection. What is the most appropriate initial management?

• A. Immediate DJ stent placement
• B. Conservative medical management with hydration and analgesics
• C. ESWL (Extracorporeal shockwave lithotripsy)
• D. Emergency ureteroscopic removal

Hint:

General rules for ureteric stones based on size:
$\leq$ 5 mm: Conservative management + MET.
5 - 10 mm: MET; if fails, consider ESWL or URS.
$>$ 10 mm: Unlikely to pass spontaneously; requires active intervention (URS, ESWL, or PCNL depending on location/type).
Any size + Infection/Obstruction: Emergency decompression (DJ stent or Percutaneous Nephrostomy).

Answer 1

The Correct Option is B

Concept:
The management of ureteral stones depends on several key factors: the size of the stone, the location of the stone, the severity of the symptoms, and the presence or absence of complications (like infection, acute kidney injury, or complete obstruction in a solitary kidney).
This patient has an uncomplicated, small (3-4 mm) stone located in the distal ureter.
Explanation:
• Stone size is the most critical predictor of spontaneous passage.

• Stones that are $\leq$ 5 mm in diameter have a very high likelihood of passing spontaneously (up to 70-90%), especially when located in the distal ureter.

• Because the patient is clinically stable, afebrile, and lacks signs of severe obstruction or concurrent urinary tract infection, invasive interventions are not immediately warranted.

• The standard of care for small, uncomplicated ureteral stones is a trial of spontaneous passage (conservative medical management).

• This approach involves adequate hydration, robust analgesia (typically NSAIDs like diclofenac or ketorolac, which also reduce ureteral spasm), and often Medical Expulsive Therapy (MET) using alpha-1 blockers (like tamsulosin) to relax the distal ureteral smooth muscle.

• Option (A) (Immediate DJ stent) and Option (D) (Emergency ureteroscopic removal) are reserved for complicated cases, such as an infected obstructed kidney (pyonephrosis), intractable pain, acute renal failure, or failure of a conservative trial.

• Option (C) (ESWL) is a definitive treatment modality for larger stones (typically proximal) but is not the first-line choice for a small, 3 mm distal stone that is highly likely to pass on its own.
Final answer:
Conservative medical management with hydration and analgesics is the most appropriate initial step for an uncomplicated small ureteral stone.