This document provides an overview of hydrocele, including:
1) Hydrocele is an abnormal collection of serous fluid in the tunica vaginalis that commonly presents as a painless scrotal swelling.
2) There are several types of hydrocele including primary/idiopathic, secondary, congenital, and infantile varieties.
3) Evaluation involves physical exam findings like transillumination and fluctuation testing while treatment options range from conservative management to surgical procedures.