BACKGROUND: Osteomas of the paranasal sinuses occur rarely in the pediatric population, we find only a few reference of symptomatic osteomas in the literature. Opinions on the indication for surgical treatment are controversial. CASE: The authors present a case of symptomatic osteoma of the right ethoimoidal sinus in a 12-year-old boy, who was treated surgically, with endoscopic endonasal approach. The symptomatology, diagnosis and therapy of these tumors in the pediatric patient are discussed. CONCLUSION: Osteomas of the paranasal sinuses are slow-growing benign lesions. Symptomatic osteomas can grow expansively and cause serious complications. The treatment of osteoma is surgical and the endoscopic approach offers the possibility of removal with cosmetic benefits.

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