Case 1. Case 1. CT scans in an 8-year-old boy with an ectopic tooth in the left nasal cavity.A, Coronal scan obtained with a bone window setting of 600-HU.

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Case 1. Case 1. CT scans in an 8-year-old boy with an ectopic tooth in the left nasal cavity.A, Coronal scan obtained with a bone window setting of 600-HU WL and 4,000-HU WW reveals that the attenuation of the mass is the same as that of the oral teeth. The mass is separated from the underlying palatine process of the maxilla.B, Axial scan obtained with the bone window setting shows the slit-like cavity well. Albert Chen et al. AJNR Am J Neuroradiol 2002;23:671-673 ©2002 by American Society of Neuroradiology