Have Cat Questions? Ask a Cat Vet Online.
Hi there, I am Dr. Kane, and I will do my best to assist you with your pet today. Please give me a moment to type up a response to your concerns. In the meantime- please take a moment to relay any other pertinent information. Sound good?
There are a few possibilities that come to mind with a swelling on the jaw:
1. Abscess (from a bite wound, grass awn, cuterebra, or infected tooth)- these need to be treated by veterinarian with a course of antibiotics. If there is a bad tooth she may need dental work as well.
2. Swollen lymph node due to infection or inflammation
3. Hematoma or seroma (collection of blood or fluid secondary to trauma/injury)
4. Tumor of the jaw or oral cavity
5. Reaction from insect bite or sting
My recommendation is to schedule a checkup with her veterinarian as soon as possible within the next day or two so that they can determine what it is and how to proceed. They may want to perform a test called a fine-needle aspirate- which will involve inserting a needle into the lump and collecting some cells to be examined under the microscope.
I hope this has helped. Do you have any other questions for me at this time?
If you are all set and would like to accept my answer, please provide a rating for me. I hope she feels better soon!