my catahoula bitch (huckleberry hound) is having a hemipelvectomy followed by radiation May 20

It all started about 6 weeks ago with her not putting her rear leg down right.  Straight to the vet, they couldn’t find anything so we made an appointment for xrays, and bloodwork was drawn.  Xrays legs, hips, spine all clear. So we were referred to an orthopedic specialist that vet couldn’t find anything so we were referred to neurologist.  Neurologist did an MRI and found a tumor in her rear leg.so we were sent to both an oncologist and a surgeon.  So we had to then have a CT guided biopsy, which was coordinated by three specialists 

while all this was occurring she was losing major muscle mass in her right rear leg 

biopsy and cytology came back mid week and it’s a grade 2 soft tissue sarcoma (unable to tell if its spindle cell or nerve sheath tumor) but her bone is also affected. But they cant tell if it’s due to compression from the tumor or if there is cancer there to

her lungs are clear and internal organs look good.  I was told I was very observant (I was a vet tech for 13 years,) but I am also a scientist so I guess that paid off.  Bc the surgeon and oncologist said the often find these when it’s too late

so we have her scheduled on May 20th for a hemipelvectomy as they can’t just remove the tumor bc they won’t get clear margins

She’s 8 years old. She’s been an athlete her whole life so they think she will do well. Her weight is really good (keeping all my dogs well muscles and fit has always been important to me )

when I was a tech I helped with amputations but never a hemipelvectomy...