## **Core Concept**
Undescended testis, also known as cryptorchidism, is a condition where one or both testicles have not moved down into their proper place in the scrotum by the time a male infant is born. This condition is associated with several potential complications, including infertility, testicular cancer, and testicular torsion.

## **Why the Correct Answer is Right**
To accurately answer this question, we need to consider the complications and characteristics associated with undescended testis. Common issues include an increased risk of testicular cancer, reduced fertility due to the higher temperature in the abdomen compared to the scrotum, and an increased risk of testicular torsion.

## **Why Each Wrong Option is Incorrect**
- **Option A:** Increased risk of testicular cancer is indeed associated with undescended testis. This is a well-documented risk factor.
- **Option B:** Infertility is also a concern for individuals with a history of undescended testis, primarily due to the higher abdominal temperature affecting spermatogenesis.
- **Option C:** Testicular torsion can occur in both descended and undescended testicles but is not specifically a direct consequence unique to undescended testis; however, the risk might be considered in the differential diagnosis.
- **Option D:** Decreased risk of testicular cancer is not accurate regarding undescended testis; in fact, there's an increased risk.

## **Clinical Pearl / High-Yield Fact**
A key clinical pearl is that the risk of testicular cancer in individuals with a history of undescended testis is higher, and these patients should be educated on self-examination. Orchidopexy (surgical descent of the testis) may reduce but does not eliminate the risk of testicular cancer.

## **Correct Answer:** D. Decreased risk of testicular cancer.