Most hydroceles develop because of blocked lymphatic flow. Hydroceles also develop after infection, injury, or local cancer tumors. Generally, hydroceles are treated by aspiration of the collected fluid. To do this, a needle is inserted into the scrotum and directed toward the hydrocele. Once there, as much fluid as possible is removed.
Hydroceles can reoccur.
Rarely, hydroceles grow larger and cause pain. Surgery is used to remove large or painful hydroceles. It is also the recommended procedure to remove hydroceles that reoccur after aspiration. Hydroceles are distinguished from other testicular problems by transillumination and scrotal ultrasound examinations. No special precautions are required for hydrocelectomy.