[SyrianDream]

Sorry to hear about your hamster. Two years and two months will show some complications as part of their old age, so he is expected to have underlying health problems. Still, since no one here is a vet, I think only a vet can answer your question, and they are the only ones who can help; that being said, your well-being as the owner is more important than your hamster, so whatever medical issues you have should be considered high-priority. You shouldn't cancel your schedule for operation.