A. I would recommend a fine needle aspirate and cytology, or, better yet, removal of the mass and submission to histopathology. I recommend the second option if I can tell the mass in not a benign lipoma because I can surgically remove with wide margins, and if the histopath results come back that it is something dangerous, then it has already been removed. I find this option more economical than the first simply because if the cytology appears like malignant cancer or is inconclusive then you proceed to removal anyway. Lipomas, however, can be deceiving in that sometimes they appear more firm, so hopefully that is all that you pup has.
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