Osteoblastoma in the parietal bone in elderly: rare tumor in the calvarium

Osteoblastomas are rare bone-forming tumors that may be locally aggressive, they account for 1-3% of all primary bone tumors with the majority presenting in young adults between their second and third decades of life. This tumor predominantly affects the vertebral column and long tubular bones. Skull involvement is markedly less frequent, and particularly parietal bone involvement is extremely rare, osteoblastoma is a rare tumor older than 50 years of age.