osteosarcoma in puppy.

Re: osteosarcoma in puppy.

Andrew Mellor — Fri, 27 May 2011 11:11:05 GMT

unfortunately as rspca case they could not afford anything other than euthanasia following the discovery, just to clarify the mets in the lungs were huge cannon balls I was really surprised the puppy was as well as she was, there was both destruction of bone and invasion of soft tissues by star burst effect bone deposition I cut down into the shoulder and the bone was just eaten away. as you say Richard they tend to be extremely aggressive tumours at these young ages due to general growth potential.

Re: osteosarcoma in puppy.

Richard Fox — Thu, 26 May 2011 18:43:48 GMT

I doesn't sound good to me - If money allows I would FNA or Bx the leg - sarcomas/malignant tumours in such young animals are in my experience very aggressive :(

Re: osteosarcoma in puppy.

Henry L'Eplattenier — Thu, 26 May 2011 15:32:43 GMT

If the lungs are full of mets, this is unlikely to be anything but cancer. Seven weeks is very young for an OSA. This could also be a congenital neoplasm like a nephroblastoma with metastases to the lungs and the bone. I would expect this to cause lytic lesions in the bone, though, rather than new bone production.

Henry L'Eplattenier, DrMedVet PhD DipECVS MRCVS

VRCC Veterinary Referrals, Laindon, Essex

Re: osteosarcoma in puppy.

Richard Fox — Wed, 25 May 2011 13:28:33 GMT

Fungal I doubt, Bacterial poss but I would expect the usual heat, pain, redness and swelling? Any evidence of an inflammatory leukogram? Is it painful like and OSA? I wouldn't rule out a neoplasm - I saw high grade lymphoma in a 8 week old puppy the other day!!! An odd congenital lesion possible unlikely to be progressive. Chondroid tumours and young onset tumours and vascular lesions are possible but obviously rare. So If no response to symptomatics i.e. anti-inflamm / Ab's then I would have to suggest FNA and or Bx ?

Re: osteosarcoma in puppy.

jose targa — Tue, 24 May 2011 23:03:33 GMT

Why don´t think in fungal or bacterial disease? I think you have to get a good diferential...