TY - JOUR T1 - Ruptured Maxillary Retention Cyst: Cause of Unilateral Rhinorrhea after Trauma JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. SP - 1121 LP - 1122 DO - 10.3174/ajnr.A1457 VL - 30 IS - 6 AU - J.K. Hoang AU - E.C. Smith AU - D.P. Barboriak Y1 - 2009/06/01 UR - http://www.ajnr.org/content/30/6/1121.abstract N2 - SUMMARY: This study describes a case of a patient with traumatic rupture of a maxillary sinus retention cyst, which had an interesting clinical presentation of unilateral rhinorrhea, mimicking a CSF leak. The diagnosis was made fortuitously by comparison of a posttraumatic CT brain examination with a CT sinus study performed 1 day earlier. ER -