Bilateral nasolabial cysts: a case report.
BACKGROUND
Nasoalveolar cysts are rare non-odontogenic cysts that occur beneath the nasal alar region. Few cases of bilateral nasoalveolar cysts have been described.


METHODS
We report a rare case of a 67-year-old Japanese woman with bilateral nasoalveolar cysts who presented to our department with the chief complaint of a swollen left nasal alar base. Panoramic radiography revealed no abnormalities. Computed tomography and magnetic resonance imaging revealed a well-circumscribed oval lesion at both alar bases. Therefore, bilateral nasoalveolar cysts were clinically diagnosed. Furthermore, these cysts were extirpated under general anesthesia; the aforementioned diagnosis was histopathologically confirmed. No recurrence has been observed 1 year after surgery.


CONCLUSIONS
Nasoalveolar cysts are rare. It is necessary to be careful because nasoalveolar cysts can show bilateral occurrence.
Oral and Maxillofacial Surgery, Tsuchiura Kyodo General Hospital, 4-1-1 Otsuno, Tsuchiura, Ibaraki, 300-0028, Japan. ptt63tx6kn@gmail.com.
Masaru
M
Sato
Division of Oral and Maxillofacial Surgery, Department of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan.
Keiichi
K
Morita
Division of Oral and Maxillofacial Surgery, Department of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan.
Yuji
Y
Kabasawa
Division of Oral and Maxillofacial Surgery, Department of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan.
Hiroyuki
H
Harada
D000368:Aged; D003560:Cysts / Q000000981:diagnostic imaging* / Q000601:surgery*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D060052:Nasolabial Fold / Q000000981:diagnostic imaging* / Q000601:surgery*; D009666:Nose; D012871:Skin Diseases / Q000000981:diagnostic imaging* / Q000601:surgery*; D014057:Tomography, X-Ray Computed
Bilateral lesions; Nasoalveolar cysts; Non-odontogenic cysts