HO HO Hypertrophic Osteopathy

Did you know that some lung tumours manifest as extra bone growth in the paws? That is, the first sign that we see is lameness and swelling of the legs, and when we go hunting, whoa hey there's a lung tumour. Some weird endocrine paraneoplastic response. It's called hypertrophic osteopathy.

  

It's still close enough to Christmas for me to use that in the title, right?
From google: