Osteoma of the fronto-ethmoidal sinuses with particular reference to their effect on the fronto-nasal duct.
D005005:Ethmoid Sinus; D005626:Frontal Sinus; D006801:Humans; D009369:Neoplasms; D009666:Nose; D010016:Osteoma; D010255:Paranasal Sinus Neoplasms; D010256:Paranasal Sinuses
ETHMOID SINUS/neoplasms; FRONTAL SINUS/neoplasms; OSTEOMA