https://www.vetsurgeon.org/f/clinical-questions/11950/testicular-tumours-in-hamsters Just out of curiosity does anyone know how likely these are to metastasise? I had a syrian hamster in with one yesterday. It was seen by a colleague a week or two ago and castration was discussed but the owner was not keen. Yesterday she was asking meen-USTelligent Community 10https://www.vetsurgeon.org/thread/66130?ContentTypeID=1Thu, 21 Jun 2012 16:48:33 GMT146601cc-3922-4be7-9974-7e1d4e45a66b:afc7922f-7723-4a61-87e4-63a26117f166Mark Rowland<p>I would at least do an FNA and get some cytology done. That will give you an idea of the cell line and a staging of the mass if it is neoplastic... or a load of pus if it is abscessated material</p> <p>Goodluck</p><div style="clear:both;"></div>