The compilation of serous fluid inside a scrotum is called hydrocele. THe scrotum gets swollen due to the accumulation of many fluids. Primary hydroceles are painless and can go on their own as the swelling is soft. However, doctor consultation is necessary. Secondary hydroceles occur due to the outcome of cancer, hernia or inflammation of testis.
Hydroceles usually occur in the newborns, however, can occur late as well in adults. There are two types – communicating and non-communicating hydroceles.