osteoblastoma is a rare benign, but locally aggressive bone tumor with rare malignant transformation. it mostly affects the vertebral column and long bones. radiographically, it is seen as an expansile, oval, sclerotic or lytic mass-like lesion with well-defined borders, although sometimes it may mimic a malignant tumor such as osteogenic sarcoma by its irregular borders. herein, we report a ca...

Osteoblastoma is a rare benign tumor of the calvarium. We present the case of a 20-year-old female with occipital osteoblastoma and discussion of imaging modalities of calvarial osteoblastoma. To our knowledge, this is the ninth reported case of occipital osteoblastoma. Imaging characterization of osteoblastoma may vary. Plain radiograph, CT, MRI, and CT angiography establish osteoblastoma char...

A rare bone tumor of 3rd metacarpal bone in a male child aged 2 years is being described. The patent presented with a gradually increasing, painful swelling over the dorsum of right hand which radiologically revealed an expansile, radioluscent mass, in 3rd metacarpal shaft with cortical destruction. The clinic-radiological differential diagnosis was aggressive cartilage tumor or an osteomyeliti...

An osteoblastoma is a primary benign bone tumor, which is rarely seen in hand bones. Osteoblastoma is generally seen in spine, pelvis, and long bones. However, there are a few case reports of osteoblastoma in wrist and hand bones. To our knowledge, up to now, only one male patient with osteoblastoma in capitate bone was reported. We report the first female case of osteoblastoma of capitate bone...

RATIONALE Sinonasal osteoblastoma is an extremely rare benign bone-forming tumor. PATIENT CONCERNS We report 2 extremely rare cases of sinonasal osteoblastoma in the middle turbinate. DIAGNOSES The preoperative diagnosis was osteoma in the middle turbinate. INTERVENTIONS We performed endoscopic removal of the mass in the middle turbinate and frontal recess. OUTCOMES Histological examina...

Osteoblastoma is a rare benign osteogenic bone neoplasm; it represents 1 to 3% of all bone tumors and usually seen in the second decade of life with a predilection in males. Classically it develops in the vertebral column. The skull is rarely involved and the orbital roof was reported to be less frequently involved. We report a new case of a benign osteoblastoma arising from the orbital roof wi...