Bone metastasis

Bone metastasis

Bone metastasis. This lytic metastasis in the right femur (arrow) has caused significant erosion of the cortex, and is therefore at risk of causing a pathological fracture. The lesion was identified initially on a staging whole body bone scan (right-hand image, arrow). This patient had breast cancer – while most metastases from breast cancer are sclerotic, some lesions can be purely lytic.