The remaining lesions are found in the tibia, femur and humerus. The peak incidence is in the fifth decade. Hemangiomas are usually asymptomatic lesions discovered on x-ray or autopsy.
Vertebral hemangiomas can cause neurological symptoms if they extend into the epidural space.
The radiological appearance can be quite striking and depends on the location of the lesion. Calvaria lesions are lytic and resemble radiating wheel spokes. T1 weighted MRI scans vary from low to high intensity depending on the amount of adipose tissue present. T2 weighted MRI scans demonstrate lesions with high intensity due to the vascularity. On gross examination, hemangiomas are cystic, dark red cavities.