My 4-month-old cat has an abnormal bleeding tumor. What's the cause?

Hello! This depends on how long the lumps have been present for. If they have been slowly growing (over a few weeks/months), then they could be some sort of skin tumour. If they just came recently (ie the last few days), it could be an abscess (which is an infection, trapped under the skin.) Would you be able to take Luna to see a vet? They would be able to examine him, and determine what type of lumps they are, and whether he can be helped with medication, or surgery. You can clean the area that he is bleeding from with warm water and a clean cloth.

It looks like a burst abscess but it could also be an ulcerated tumor, i strongly advise taking her to the vet today in order to get it checked and treated, she will need an antibiotic injection at the very least in order to heal from this.

Thanks for using Petco Pet Education Center, formerly Petcoach! This could be a benign or malignant growth. That type of behavior of coming and going is typical of a mast cell tumor though of course that is not the only possibility. Another possibility is a recurring infection. There is no way of knowing what it is just based on its appearance. This is often differentiated by a test called a fine needle aspirate (FNA) which is a pain free, inexpensive and easy procedure which in most cases will help reach a diagnosis. Sometimes a biopsy is needed for a definitive diagnosis. I recommend that you have him evaluated by your veterinarian for further assessment and treatment. I am really hoping for something benign. Good luck and have a good day!

It is possible that it is a tumor, and could possibly be infected. I would encourage you to have him evaluated by your veterinarian soon. They may recommend antibiotics and possibly removal. Best of luck and thank you for using Pet Coach.

This is a draining abscess. Please clean the area with a warm damp cloth until the discharge is gone. Then you can apply a thin film of antibacterial ointment on it. If he’s not neutered I recommend getting him fixed so he doesn’t get into fights. If he’s sick then he probably has a fever from the infection and should have a veterinary exam and antibiotics. Thanks for using Petco Pet Education Center, formerly Petcoach to help you care for Jasu.

Thanks for using Petco Pet Education Center, formerly Petcoach! This could be a benign or malignant growth. This is often differentiated by a test called a fine needle aspirate (FNA) which is a pain free, inexpensive and easy procedure which in most cases will help reach a diagnosis. Sometimes a biopsy is needed for a definitive diagnosis. I recommend that you have him evaluated by your veterinarian for further assessment and treatment. I am really hoping for something benign. Good luck and have a good night!

It looks like he had an abscess that burst open. It would be best to have your vet check this out. In the meantime you can use this wound spray on it. ( https://www.petco.com/shop/en/petcostore/product/vetericyn-cat-wound-and-skin-hydrogel )