Hi Doctor,I m a 55 year old male in general good health,about a month ago I noticed one of my testicles was quite enlarged,it wasn t painful just uncomfortable,a close friends wife is an E.R Dr and I consulted with her about it,she pointed out that it was filled with fluid and wasn t the actual testicle that was enlarged,she suggested I went to see my primary if it didn t go down within a day or two,it did go down so I didn t follow up with my Dr,in the last week or so it s returned,it seems to be nearer normal size when I wake up and larger during the day when I m working and moving around,any thoughts on possible causes and what the treatment may be.thank you for reading this and this great website.Jerry