title: [Formation of pneumosinus dilatans frontalis].
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001847:Bone Diseases / Q000209:etiology; D002648:Child; D002675:Child, Preschool; D005624:Frontal Bone / Q000254:growth & development; D005626:Frontal Sinus; D006801:Humans; D008297:Male; D008875:Middle Aged