Youssef AA, Nada A, Elkiki HA. Ethmoidal sinus osteoma associated with Pneumocephalus. Glob J Medical Clin Case Rep [Internet]. 2023 Jul. 3 [cited 2024 Dec. 27];10(3):016-8. Available from: https://www.clinsurggroup.com/gjmccr/article/view/GJMCCR-10-271