My son had undescended testicle (left) by birth, surgeon asked us to wait till he his 11months, and due to covid we did operation when he his 1.2years and now right testicle is shiny and bulged. Looks like hydrocele. I am not sure why it was not diagnosed when surgeon operated. Also worried will it require another surgery or is there any medical treatment to cure this. Will this appear all of a sudden? Can someone help us please. He his getting sick often as well. He is 15months old now.