Tomographic characteristics. Axial scans (A1, B1) and coronal reformatted images (C1, D1) in bone window, and the same axial (A2, B2) and coronal (C2, D2) slice levels in contrast-enhanced soft tissue window. (A, B) The views show that the right inferior nasal concha was moderately increased in volume and tissue proliferation was observed in its anterior portion. (C, D) The nasal septum was partially destroyed. The lesion had invaded the alveolar process and soft tissue. Contrast enhancement was moderate and homogenous.