Benign eye tumor/cyst - meibomian gland adenoma

My 13 yo dog a meibomian gland adenoma right above his eyelid. I’ve been monitoring the growth as he has another benign one on the top of his head. After getting it checked out by the vet, they told me the medical name of the benign tumor/cyst that formed. It’s concerning because it’s right above his eye, and there’s a small dot right on the inner lid so I’m afraid it may get worse or metastasize but it also worries me to put him through surgery/anesthesia due to his age. Is there anything else that can be done besides surgically removing it with general anesthesia? Any medical advice or insight would be very much appreciated. Thank you!!  

Hello- and huge empathy for the position that you find yourself in.   I cant give you better information than your vet can - but thats probably not what you're wanting.  You sound to be wanting support in making a difficult decision.  It is difficult.  Good questions for your vet are:  what are the main advantages of having this procedure done?  What are the main disadvantages?  (You might know this already;  list them).  What can we do to lessen the disadvantages in either case? (I'm thinking fluids / blood tests pre-surgery etc)   What would you choose if you had a dog in this situation (NB it is still perfectly ok if your perspective on that is different from your vets').  Sometimes, there are no right and wrong choices; you can only do the best with the knowledge that you have in front of you at the time.