My Russian Dwarf hamster has a lump under its arm. Is it serious?

Question

Hi, My 1 year and 7 month year old male Russian Dwarf hamster has recently developed a lump on his right armpit area and have no clue what I should do. Do you have any advice? Pet's info: Small Animal | Hamster | Male | unneutered

Dr. Massimo Orioles, DVM, Cert AVP, MRCVS · Accepted Answer

Hi, and thanks for your question. Although a picture of it would help to determine the underlying cause more specifically, generally speaking this kind of lump/growth needs to be ideally assessed by your veterinarian to have a definitive and specific answer. Usually there are two ways your vet can do that a part from examining it directly during physical examination. A biopsy can be taken under local or general anesthetic, otherwise a smaller sample through a fine needle can be aspirated (this technique is called FNA= fine needle aspiration). Differentials include skin cysts, infections, benign or more sinister type of tumors. Hope this answer was helpful, but please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further. Please find the time to give us a feedback about the consultation as that will be used to improve our service.

My Russian Dwarf hamster has a lump under its arm. Is it serious?

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