**Core Concept**
A hydrocele is a type of fluid collection that occurs in the tunica vaginalis, a potential space surrounding the testis. This condition is often associated with increased fluid production or impaired reabsorption. Hydroceles can be congenital or acquired, and their management depends on the underlying cause and symptoms.

**Why the Correct Answer is Right**
The correct answer will address a false statement about hydroceles. Hydroceles are typically characterized by a painless, non-tender swelling in the scrotum. The fluid collection can be unilateral or bilateral and may be associated with an underlying infection or inflammation. In some cases, a hydrocele may be a sign of an underlying testicular tumor or other pathology.

**Why Each Wrong Option is Incorrect**
**Option A:** Hydroceles are always caused by an underlying infection. **This is incorrect because while infections can contribute to hydrocele formation, they are not the sole cause. Other factors, such as obstruction of the lymphatic vessels or increased venous pressure, can also lead to hydrocele development.**

**Option B:** Hydroceles are always congenital. **This is incorrect because while some hydroceles are congenital, many others are acquired due to various factors such as injury, infection, or increased venous pressure.**

**Option C:** Hydroceles are always associated with a palpable mass. **This is incorrect because while a palpable mass is often present in hydroceles, it's not a universal characteristic. In some cases, a hydrocele may be asymptomatic and not associated with a palpable mass.**

**Option D:** Hydroceles can be managed conservatively. **This is incorrect because while some hydroceles may be managed conservatively, others may require surgical intervention, especially if they are large or symptomatic.**

**Clinical Pearl / High-Yield Fact**
It's essential to distinguish between a hydrocele and a spermatocele, which is a separate condition characterized by a cystic enlargement of the epididymis. A spermatocele is usually associated with a palpable, firm mass, whereas a hydrocele is typically a soft, painless swelling.

**Correct Answer: B. Hydroceles are always congenital.**