This may involve taking samples of tumor tissue, it may mean removing the whole tumor, or it may be an attempt to remove as much of the tumor as possible. (olddominionanimalhospital.com)
To make a diagnosis for the canine eye tumors mentioned, your veterinarian will want to take a small sample of the tumor for testing in a lab. (dog-health-guide.org)
This usually involves taking small samples of the tumor, either with a needle or a biopsy instrument, and sending the samples to a laboratory for analysis. (cathealth.com)