https://www.vetsurgeon.org/f/clinical-questions/29309/lymphoma-or-sarcoma I have a 7-year old, male, castrated, Main Coon. Four weeks ago, we have found that on his rear limb in the ankle region, there is a 2-3 cm tumor. Apparently, we did not see it earlier because of long, dense hair in this area. The cat is not invalidateden-USTelligent Community 10https://www.vetsurgeon.org/thread/225090?ContentTypeID=1Tue, 25 Aug 2020 17:02:07 GMT146601cc-3922-4be7-9974-7e1d4e45a66b:6c8fe748-dcc1-4f2f-8178-0e2794456a60Joyce Whitehead<p>Not by any means an expert here but I had an almost identical mass in a Labrador a couple of years ago, came back as sarcoma after removal, so amputation performed as we couldn&rsquo;t get margins. Sadly recurred in pelvis 7 months later and eventually put to sleep. Hope yours is better, but I&rsquo;d agree with Kate that a sarcoma seems more likely.&nbsp;</p><div style="clear:both;"></div>https://www.vetsurgeon.org/thread/225082?ContentTypeID=1Tue, 25 Aug 2020 12:18:33 GMT146601cc-3922-4be7-9974-7e1d4e45a66b:71a7159a-5521-4e26-a116-174c8fcc851eKate Richardson<p>Could the lab perform immunoghstochemistry staining on the samples to determine tumour type more precisely (I&rsquo;m no expert but PARR or similar) as if it&rsquo;s lymphoma then chemotherapy might be a more appropriate treatment option and allow the cat to keep its leg?&nbsp;<br />I have to say though my gut says it&rsquo;s more likely a sarcoma&nbsp;</p><div style="clear:both;"></div>