What is the most sensitive physical finding for the diagnosis of testicular torsion?

What is the most sensitive physical finding for the diagnosis of testicular torsion?

• A. Abnormal results of urine culture
• B. Pain lasting for hours or days
• C. Absence of the cremasteric reflex
• D. The alleviation of pain when the testis is elevated

Answer: (C)

The key idea is that in an acute scrotal crisis, quick clinical clues are needed to distinguish torsion from other causes. The most sensitive physical finding for testicular torsion is the absence of the cremasteric reflex on the affected side. Normally, stroking the inner thigh elicits a reflex that pulls the testicle upward; torsion disrupts the reflex arc, so this reflex fails to occur when the testis is twisted. Because this sign is highly sensitive, its absence strongly suggests torsion and should prompt urgent surgical evaluation to attempt detorsion before testicular viability is lost. Other findings are less reliable. Abnormal urine cultures point toward infection rather than torsion. Pain duration being hours or days isn’t specific to torsion. Relief of pain with elevation (Prehn sign) has poor sensitivity and specificity and is not dependable for diagnosing torsion. In all cases, torsion is a surgical emergency, and absence of the cremasteric reflex is a critical cue to act quickly.

The key idea is that in an acute scrotal crisis, quick clinical clues are needed to distinguish torsion from other causes. The most sensitive physical finding for testicular torsion is the absence of the cremasteric reflex on the affected side. Normally, stroking the inner thigh elicits a reflex that pulls the testicle upward; torsion disrupts the reflex arc, so this reflex fails to occur when the testis is twisted. Because this sign is highly sensitive, its absence strongly suggests torsion and should prompt urgent surgical evaluation to attempt detorsion before testicular viability is lost.

Other findings are less reliable. Abnormal urine cultures point toward infection rather than torsion. Pain duration being hours or days isn’t specific to torsion. Relief of pain with elevation (Prehn sign) has poor sensitivity and specificity and is not dependable for diagnosing torsion. In all cases, torsion is a surgical emergency, and absence of the cremasteric reflex is a critical cue to act quickly.