This document discusses bilateral hydrocele, which is a fluid collection around the testes. It defines different types of hydrocele including congenital, infantile, encysted, and secondary to infections. Key features include a fluctuant, transilluminant swelling above the scrotum without palpable testes. Complications can include infection, infertility, and testicular atrophy. Differential diagnoses include hernia and tumors. Treatment involves surgical techniques like Lord's plication, evacuation and eversion, or subtotal excision depending on size and characteristics of the hydrocele sac.