A 24 year old woman with pain off and on for years

Case ID Number: 
20141212KK
Image Modality: 
Xray
Tumor Type: 
Tumors of Bone
Benign/Malignant: 
Benign
Body Region: 
hip and proximal femur
Bone Name: 
femur
Location in bone:: 
metaphyseal
Periosteal Reaction: 
absent
Position within Bone: 
central
Tumor Behavior: 
active
Tumor Density: 
lytic