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  • Title: Frontoethmoidal Osteoma with Secondary Intradural Mucocele Extension Causing Frontal Lobe Syndrome and Pneumocephalus: Case Report and Review of Literature.
    Author: Licci M, Zweifel C, Hench J, Guzman R, Soleman J.
    Journal: World Neurosurg; 2018 Jul; 115():301-308. PubMed ID: 29679781.
    Abstract:
    BACKGROUND: Paranasal sinus osteoma is a common, asymptomatic, histologically benign, slow-growing tumor. However, it can give rise to secondary pathologies such as a mucocele in about 50% of the cases. Rarely, intracranial and orbital extension is present, leading to rhinoliquorrhea, pneumocephalus, or neurologic and visual impairment, which might be potentially life-threatening. CASE DESCRIPTION: A 49-year-old man presented with an acute frontal lobe syndrome and rhinoliquorrhea. Cranial magnetic resonance tomography showed a suspected frontoethmoidal osteoma with a mucocele expanding intradurally into the left frontal lobe. It was accompanied by pneumocephalus and showed communication with the left lateral ventricle. Through a bifrontal craniotomy, in toto resection of the frontoethmoidal bony tumor and the intradural mucocele was performed, while thereafter the frontal sinus was cranialized using a pedunculated periosteal flap. Postoperative recovery was uneventful with complete resolution of the tension pneumocephalus and rhinoliquorrhea and led to an improvement of the frontal lobe syndrome. CONCLUSIONS: We present a rare case of pneumocephalus caused by a frontoethmoidal osteoma associated with an intradural mucocele. A review of the literature, focusing on the surgical strategies in such cases, is provided.
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