My old hamster has a new lump on its bottom. Is it a tumor? What can I do?

These types of tumors are very common in old hamsters, they do tend to grow fast too. it's not possible to know how long he has left, but probably not very long. if the problem is affecting him locally only, there is a surgical option to have it removed, which is the only thing that can help at this point.

This is most likely a tumor, which are common in hamsters. it's usually possible to remove such a tumor surgically but of course the risks of anesthesia in hamsters are quite high. price wise this could range between 300-500$.

Thank you for using Petco Pet Education Center, formerly Petcoach and congratulations on your new additions! I can see a darker area on Rosie's bottom, but it is difficult to determine if the lump is actually protruding. Hamsters do have pretty prominent scent glands, and this may be due to poor grooming of the secretions. Older hamsters have a tendency to develop papillomas, which may be uncomfortable and can cause the trouble walking. You should have Rosie seen by a vet to determine exactly what the growth is, they may take a small sample with a fine needle to send off as a biopsy. In the meantime, keep a close eye on the area for increase in size or bleeding, as these are indications for an emergency visit. I hope all is well!

Lumps can alwys be a tumor, a cyst, or an Abscess. When it is black and solid, it could be melanoma, when it is black and fluctuating, it could be a hematoma. Unfortunately without a photo and the ability to palpate the lump I cannot say which type it might be. However your vet will be able to tell, and if necessary he can determine the type of mass with a fine needle aspirate where a tissue sample is harvested with a very thin needle. Treatment varies depending on diagnosed condition.

I am sorry to hear about your hamster. With a swelling like this we would worry about a variety of problems including a cellulitis or inflammation/infection of the tissues, swelling due to trauma like a broken bone, swelling due to edema or disruption of lymph flow, or unfortunately a tumor. I would recommend having a veterinarian examine your hamster to determine the source of the swelling and the possible treatment options.

Thank you for using Petco Pet Education Center, formerly Petcoach! It is difficult to say what the lump is without seeing a photo of Poptart. Hamsters can get papillomas (warts) or cancerous masses as well as skin infections. While removal is likely to be one of the best options, you should try to keep the area as clean as possible and look out for any bleeding or ulceration of the growth. I hope this helps and that all is well!

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 am really hoping for something benign. Good luck and have a good day!