If the scrotum
is very much enlarged,it could be Hydrocele
Clinical examination by surgeon will confirm the diagnosis.
If the swelling is huge,it has to be operated soon.
If it is of mild to moderate size,he can wait.
As he has undergone bypass surgery
in Nov,it is better to consult Cardiologist
and proceed for surgery.
There is no time limit for surgery as hydrocele is not an emergency condition
Wish him good health