Hello dear, Thank you for your contact to health care magic. I read and understand your concern. I am Dr Arun Tank answering your concern. Fluid filled swelling around the scrotum is known as hydrocele. Treatment of which is only surgery. If you are having hydrocele than immediately operate your self. Otherwise the swelling gradually increases. It becomes enormous in size if the operation has not been performed. Also take good preventive measure to avoid the injury to the fluid filled sac otherwise hemorrhage occurs in it and requires immediate surgery. In second case it may be lymph filled sac. It can only occurs in filaria and should be treated thereafter with surgery abd DEC treatment. I will be happy to answer your further concern on bit.ly/DrArun. Thank you, Dr Arun Tank Infectious diseases specialist, HCM.