Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to treat tumors in hamsters [title] Talk with your vet about surgical treatment. [step] After your vet has diagnosed a tumor in your hamster, talk with them about how to treat the tumor. For external tumors (located on the skin), surgery is the best treatment option.

Ending1: Surgery will require surgery that will look for activity issues, which will cost more for larger tumors. [substeps] To safely do surgery, the vet may try to keep the tumor under wraps, which will result in lumps. Ending2: While surgery is a necessary treatment, even if the tumor clears up fast, surgery may be necessary because they can be more dangerous, and are more likely to cause complications. Surgery will prevent invasive tumors from moving further or exposing the healing bone of the pet. Ending3: For internal tumors (inside the body), though, surgery would be more challenging because of a hamster's small size and tiny internal organs. [substeps] Your vet can help you determine whether surgery would be a good treatment option for your hamster. Ending4: Any tumors that come out with the tumor, such as cysts and tumors, may require surgery, as they may require surgical intervention. Surgical treatment consists of chemotherapy: a treatment of chemotherapy through the treatment of needle stimulation is if your hamster has any cysts on the skin.

Answer format: ending1/ending2/ending3/ending4