Help! My Cat Has a Lesion! (Vet Answered)
This question has been answered by a vet
Veterinarian & Animal Behaviorist
With nearly two decades in veterinary medicine, Dr. Paola brings hands-on experience across multiple species. A graduate of the University of Guadalajara, she specializes in preventive care, animal welfare, and positive reinforcement training.
The Question
“Dear Dr. Paola,
My cat Garfield has had a lesion on his lower lip for a year. It now appears bigger. He has not lost weight and has no problem with appetite. I am aware of squamous cell carcinoma. Garfield is approximately 16 years old. He was born on my business property (feral) and lives there as a barn cat. Not sure what the best action to take is, as it will be difficult to get him to the vet. Please advise.” – Joanne
Quick Info about Garfield
Hi Joanne,
Thank you for looking out for Garfield, especially given his age and the challenges of his semi-feral lifestyle. A persistent lesion on the lower lip that’s slowly enlarging, particularly in a senior cat, absolutely deserves attention. You’re right to have squamous cell carcinoma (SCC) on your mind; this is unfortunately one of the more common oral cancers in older cats, especially those with outdoor exposure. That said, not every lesion is cancer. Chronic inflammation, eosinophilic granulomas, or even old trauma can also cause similar changes, but a year-long history and recent enlargement do raise concerns.
Because he hasn’t lost weight and is eating well, it may not be causing him discomfort just yet, but cats are incredibly stoic. Oral cancers can stay deceptively quiet until they reach an advanced stage. The only way to confirm the nature of the lesion is through a veterinary exam, possibly followed by a biopsy. I understand he’s hard to handle, and that’s a real consideration with feral or barn cats. In cases like this, a humane trap might be the most practical tool to safely transport him. Many veterinary clinics will work with you if you explain the situation in advance, and some mobile vets or shelter-affiliated clinics are familiar with handling ferals and may even sedate them in the trap for the exam.
Garfield has already beaten the odds by reaching 16, and he clearly means a lot to you. Giving him the chance for a proper diagnosis, even if treatment ends up being limited by his lifestyle or comfort, is the kindest next step. If it is SCC, early palliative care can help maintain his quality of life for as long as possible.
Thanks for your kindness,
Dr. Paola