All of the following are true about cryptorchidism, except:
**Core Concept**
Cryptorchidism, also known as undescended testes, is a congenital condition where one or both testes fail to descend into the scrotum during fetal development or early infancy. This condition is associated with an increased risk of testicular cancer, infertility, and other complications.
**Why the Correct Answer is Right**
Cryptorchidism is often linked to genetic factors, with a higher incidence in firstborn males and those with a family history of the condition. The exact cause is unclear, but it may be related to hormonal imbalances or anatomical abnormalities in the gubernaculum, a fibrous cord that guides the testes during descent.
**Why Each Wrong Option is Incorrect**
**Option A:** Cryptorchidism is associated with an increased risk of testicular cancer. This statement is true, making **Option A** a distractor.
**Option B:** Cryptorchidism is caused by a lack of androgens. This statement is incorrect, as the primary cause is unclear and may be related to a complex interplay of hormonal and anatomical factors.
**Option C:** Cryptorchidism is a common condition, affecting approximately 4% of full-term male infants. This statement is correct, making **Option C** a distractor.
**Option D:** Cryptorchidism is typically diagnosed at birth. This statement is incorrect, as it is often diagnosed during a routine physical examination later in infancy.
**Clinical Pearl / High-Yield Fact**
Cryptorchidism is a significant risk factor for testicular cancer, with a 10-fold increased risk compared to the general population. Early diagnosis and treatment, such as orchiopexy, can help mitigate this risk.
**Correct Answer: B. Cryptorchidism is caused by a lack of androgens.**