I'd say listen to your vet. If removal of the cyst means that you're dog doesn't develop cancer, then have it removed. We've had two removed from our dog and he's just fine. They weren't huge but he's much happier now they're gone.
Can You Help Me?My Dog Has Had A Sebaceous Cyst For 6 Yrs And It Has Gotten Much Larger In The Last Year. It Has A Hole In The Center And White Thick Cheesy Stuff Can Be Expressed Along With Blood And A Sticky Oily Discharge. My Vet Now Wants To Remove It As He