A patient with sudden severe flank pain radiating to the groin most likely has which condition?

A patient with sudden severe flank pain radiating to the groin most likely has which condition?

• A. Cystitis
• B. Pyelonephritis
• C. Ureterolithiasis
• D. Urethritis

Answer: (C)

This pattern reflects renal colic from a stone obstructing the ureter. The sudden, severe flank pain that radiates toward the groin happens as the stone causes intermittent blockage and the ureter contracts to push it along. The pain is typically intense, colicky, and may come with restlessness, nausea, or vomiting. Hematuria is common due to irritation of the urinary tract. This presentation helps distinguish ureterolithiasis from other causes: cystitis causes burning on urination and suprapubic pain, pyelonephritis brings fever and more generalized flank tenderness with systemic symptoms, and urethritis mainly causes dysuria and discharge.

This pattern reflects renal colic from a stone obstructing the ureter. The sudden, severe flank pain that radiates toward the groin happens as the stone causes intermittent blockage and the ureter contracts to push it along. The pain is typically intense, colicky, and may come with restlessness, nausea, or vomiting. Hematuria is common due to irritation of the urinary tract. This presentation helps distinguish ureterolithiasis from other causes: cystitis causes burning on urination and suprapubic pain, pyelonephritis brings fever and more generalized flank tenderness with systemic symptoms, and urethritis mainly causes dysuria and discharge.