Osteoid osteoma

Image Modality: 
clinical photo
Benign/Malignant: 
Benign
Body Region: 
knee, thigh, distal femur, proximal tibia
Bone Name: 
femur
Location in bone:: 
metaphyseal
Periosteal Reaction: 
absent
Position within Bone: 
cortical
Tumor Behavior: 
active
Tumor Density: 
mixed