Fallibility of sinus radiographs in demonstrating ethmoid sinusitis.
D005005:Ethmoid Sinus / Q000000981:diagnostic imaging*; D005188:False Negative Reactions; D006261:Headache / Q000000981:diagnostic imaging*; D006801:Humans; D012852:Sinusitis / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed