title: The roentgen diagnosis of fluid in the frontal and sphenoidal sinuses.
mesh_terms: D005626:Frontal Sinus / Q000000981:diagnostic imaging*; D006801:Humans; D010256:Paranasal Sinuses; D011859:Radiography; D013100:Sphenoid Bone; D013101:Sphenoid Sinus / Q000000981:diagnostic imaging*
keywords: FRONTAL SINUS/roentgenography; SPHENOID SINUS/roentgenography