Which of the following conditions can result in increased temperature within the scrotum?

Increased temperature within the scrotum can occur due to both varicocele and cryptorchidism, making it the correct choice.

A varicocele is an abnormal enlargement of the veins within the scrotum, which can hinder normal blood flow. This condition can lead to increased heat in the testicular area because the warm blood in the dilated veins does not dissipate effectively, raising the temperature of the testicles. Elevated scrotal temperature can negatively impact sperm production and quality.

Cryptorchidism, or undescended testicles, similarly causes an increase in temperature. Normally, the testes descend into the scrotum, which is an environment cooler than the body to facilitate proper sperm development. When the testes remain in the abdominal cavity or do not reach the scrotum, they are exposed to a higher temperature, which can adversely affect spermatogenesis and lead to issues such as infertility.

Thus, both conditions are related to increased scrotal temperature through different mechanisms, emphasizing the relevance of maintaining optimal testicular temperature for reproductive health.