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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 27:1826-1829, October 2006
© 2006 American Society of Neuroradiology

Case Report
HEAD & NECK

Spheric Mass Beneath the Alar Base: MR Images of Nasolabial Cyst and Schwannoma

S. Iida^a, T. Aikawa^a, M. Kishino^b, T. Sakai^a, Y. Nakano^a, M. Okura^a and M. Kogo^a

^a The First Department of Oral and Maxillofacial Surgery, Osaka University Graduate School of Dentistry, Osaka, Japan
^b Department of Oral Pathology, Osaka University Graduate School of Dentistry, Osaka, Japan

Please address correspondence to: Seiji Iida, DDS, PhD, The First Department of Oral and Maxillofacial Surgery, Osaka University Graduate School of Dentistry, 1-8 Yamadaoka, Suita, Osaka 565-0871 Japan; e-mail: iida{at}dent.osaka-u.ac.jp

SUMMARY: We report 2 cases of nasolabial cyst and a case of schwannoma beneath the alar base that required a differential diagnosis because of clinical features and MR images that resembled the nasolabial cyst. The morphologic analysis on MR images revealed the characteristic appearance of the nasolabial cyst, and the sagittal MR image may be most helpful for diagnosing this rare disease.