Fig. 4From: Frontal recess anatomy in Japanese subjects and its effect on the development of frontal sinusitis: computed tomography analysisPercentages of various frontal recess cells identified on CT images. ANC: agger nasi cells; FC1–FC4: frontal cell types 1–4; SBC: suprabullar cells; SOEC: supraorbital ethmoid cells; FBC: frontal bullar cells; IFSSC: intersinus septal cells. CRS(+): patients with chronic rhinosinusitis; CRS(–): patients without chronic rhinosinusitis; Total: all patients with and without chronic rhinosinusitisBack to article page