Choice A rationale:

Impaired fertility.

In the case of testicular torsion, the most concerning potential complication is impaired fertility.

Testicular torsion is a medical emergency where the spermatic cord twists, cutting off blood supply to the testicle.

If not promptly treated, it can result in permanent damage to the testicle, leading to impaired fertility or even loss of the affected testicle.

Choice B rationale:

Testicular atrophy.

Testicular atrophy can be a consequence of testicular torsion, but impaired fertility takes precedence as the most concerning potential complication.

Testicular atrophy refers to the shrinking of the testicle due to reduced blood flow and can result from untreated torsion.

However, the primary concern is preserving fertility whenever possible.

Choice C rationale:

Recurrent torsion.

While recurrent torsion is a potential complication, it is not the most concerning one in this case.

The immediate priority is to address the acute torsion episode and prevent permanent damage to the testicle.

Once the initial episode is managed, strategies to reduce the risk of recurrent torsion can be considered.

Choice D rationale:

Metastasis to other organs.

Metastasis to other organs is not a direct concern in cases of testicular torsion.

Testicular torsion is a mechanical issue involving the twisting of the spermatic cord, and it does not typically lead to metastasis.

The primary focus should be on restoring blood flow and preventing damage to the affected testicle.