**Core Concept**
Varicocele surgery is indicated in cases of symptomatic varicoceles, which are characterized by a significant enlargement of the pampiniform venous plexus in the scrotum. The primary goal of surgery is to relieve symptoms, improve fertility, and prevent potential complications such as testicular atrophy.

**Why the Correct Answer is Right**
Surgical indications for varicocele include persistent pain, atrophy of the affected testis, or significant impairment of fertility. The surgical procedure, such as pampiniform venography or varicocelectomy, involves ligating or clipping the dilated veins to restore normal blood flow to the testis. This can be achieved through an open or laparoscopic approach. The procedure aims to prevent further testicular damage and alleviate symptoms.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because varicocele repair is not typically indicated for asymptomatic varicoceles, unless there is a significant impact on fertility or testicular function.
**Option B:** This option is incorrect because hormonal imbalances are not a primary indication for varicocele surgery, although it may be considered in cases of hypogonadism or testicular atrophy.
**Option C:** This option is incorrect because varicocele repair is not typically indicated for conditions that are not directly related to varicocele, such as epididymitis or testicular cancer.

**Clinical Pearl / High-Yield Fact**
Varicocele surgery is most effective when performed in patients with a significant varicocele, as defined by a diameter of at least 2 cm. Early intervention can help prevent further testicular damage and improve fertility outcomes.

**Correct Answer:** C.