When I saw my urologist he said he wouldnt do it on anyone under 1 year and would still need a psych letter and one from a endo but only if both agreed , but if it was cance it would be a different story but still requires specialists reports and psych letter,
But when I saw him the second time cause he removed a large cyst from that area he said just a psch letter would be needed as Ive been on HRT for over 10 years but I also got one from my endo as well to be on the safe side and he didnt have any problems doing it,
But make sure you actually want it and speak with a endo thats treating you and you get all the info on it the pro's and con's, also if your planing on having SRS later speak with then as some surgeons will not do it if you've had a orchi and if they will do SRS after orchi make sure your urologist does the cutting in the right place.....
And have a good read through the orchi posts here and also read through the SRS / GRS post there is a wealth of knologe about there experiences..
Cheers Tracy