Name : Mehdi
Email : ----------------
Resident : Hussein Soleiman Tabar
Gender : Male
Age : 31
31 years old man with pain in right shoulder and arm.
Imaging Procedures and Findings
An expansile lytic lesion with sclerotic matrix involving right pedicle with extension to lamina and vertebral body is visible.
Osteoblastoma is a rare benign tumor. It is at least four times less common than osteoid osteoma. There is a male predominance, with a male-to-female ratio of 2.5:1. Its peak incidence is in the second decade, and it is rare before 10 years and after 30 years of age. Its most common location is the spine, usually in the posterior elements. In the long bones it is most often located in the metadiaphyseal region; in rare circumstances it can extend into the epiphyses in adults. Osteoblastomas may be associated with aneurysmal bone cysts. On CT, osteoblastoma appears as an expansile lytic lesion, often with a mineralized matrix, surrounded by a thin bony shell. Dense sclerosis and periosteal reaction may occasionally be present. Osteoblastoma typically has low to intermediate signal intensity on Tl-weighted images and high signal intensity on T2-weighted images. Edema in the surrounding soft tissues and in the bone marrow beyond the tumor margins is common.
Osteoblastoma of C4 vertebra
CT and MR imaging of the whole body / [edited by] John R. Haaga ... jet al.].-5th ed