Ethmoidal fibroangioma.
D005005:Ethmoid Sinus; D006391:Hemangioma; D018219:Histiocytoma, Benign Fibrous; D006801:Humans; D009369:Neoplasms; D010255:Paranasal Sinus Neoplasms
ANGIOMA, SCLEROSING; ETHMOIDAL SINUSES/neoplasms