Painful knee responses

These were the responses for the case of Painful knee

Go for chondroblastic OS

Too dark on CT

Too much edema and Enh

Hi,

Probably chondroid.

CMF doesn’t form mineralized matrix, so not CMF.

Looks aggressive. Go with Avneesh.

looks benign and chondroid—seems bony origin although posterior cortical
loss made me wonder of outside chance of PVNS

I agree it most likely is a chondroid lesion. I believe a juxtacortical
(periosteal) chondroma is more likely than a chondromyxoid fibroma, partly
due to the age of the patient. I think the injury is unrelated.

Would have thought about Chondroblastoma and very much about osteoblastoma
as well. Obvious mineralization and prominent surrounding edema. The
prominent dense mineralization makes inclusion of osteoblastoma important
to include.

Post traumatic large osteochondral lesion with secondary
hemosiderin/fibrous tissue.

Thanks everyone for contributing!! I am attaching an article from skeletal
radiology about calcifying CMFs!!

regards