https://www.vetsurgeon.org/f/clinical-questions/19626/odd-opacity-in-thigh The patient is a very overweight 4 year old castrated CKCS with a history of intermittant RH lameness for several months. When x-raying discovered this odd rounded trianular opacity which appears partially over the femur on the VD hip view. It is repeatableen-USTelligent Community 10https://www.vetsurgeon.org/thread/118124?ContentTypeID=1Fri, 25 Jul 2014 17:45:43 GMT146601cc-3922-4be7-9974-7e1d4e45a66b:48d1bb3c-cdf2-4344-8e80-e0c7a08f9e04Rob Davis<p>[quote user=&quot;derrick carpenter&quot;]Looks like it&#39;s within the hamstrings (semitendinosus?). It may be myositis ossificans, muscle inflammation leading to bone formation, which I think has been reported in cavaliers. Unless it&#39;s an odd tumour like an osteosarcoma. Biopsy? Steroids?</p> <div style="clear:both;"></div> <p>[/quote]</p> <p>As I can&#39;t palpate anything in this area, I would be worried that I may cause more harm than good trying to biopsy, and may be difficult to ensure am biopsying the right area. I don&#39;t think this is what is causing the dog&#39;s lameness, and I would rather avoid steroids if at all possible given his ongoing weight problems....</p> <p>Any other ideas?</p> <p>&nbsp;</p><div style="clear:both;"></div>https://www.vetsurgeon.org/thread/117701?ContentTypeID=1Fri, 18 Jul 2014 13:39:20 GMT146601cc-3922-4be7-9974-7e1d4e45a66b:71a3cb61-5581-49ef-82ea-be356a446a35derrick carpenter<p>Looks like it&#39;s within the hamstrings (semitendinosus?). It may be myositis ossificans, muscle inflammation leading to bone formation, which I think has been reported in cavaliers. Unless it&#39;s an odd tumour like an osteosarcoma. Biopsy? Steroids?</p><div style="clear:both;"></div>