A Hydrocele is caused by fluid accumulating in a sac around the testicle. Around 1 in 10 male babies are born with the condition, which normally disappears without treatment during their first year. They can occasionally develop in older men, often as result of inflammation or an injury to the scrotum. They are not normally painful, and frequently do not require treatment. The main reason for concern is that the symptoms are similar to the swellings that can occur as a result of testicular cancer. As such, a swift visit to the doctor is advisable to rule out anything more serious. If treatment is found to be necessary, then it is frequently carried out by a small surgical procedure to remove the fluid filled sac, or sometimes through drainage of the excess fluid and injection of a thickening agent into the sac.
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