Fibrous dysplasia of paranasal sinuses with anterior skull-base extension presenting with pneumocephalus; a case report

Fibrous dysplasia is a benign fibro-osseous lesion where normal bone is replaced with immature dysplastic woven bone and fibrous tissue. Fibrous dysplasia has the potential to involve multiple bones of the craniofacial area in a rare condition. Management of this involvement type should be assessed carefully. Here, we report a 52-year-old man with progressive and bilateral frontal headache. The radio/pathologic diagnosis revealed fibrous dysplasia of paranasal sinuses with anterior skull-base extension and pneumocephalus. The patient underwent a craniotomy, and 2 weeks after the procedure, the symptoms were alleviated without any complications. in case of fibrous dysplasia, patients with new onset and/or mild symptoms may have extensive lesions in multiple craniofacial bones.