TY - JOUR T1 - Fluid-fluid levels in benign neurogenic tumors. JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. SP - 385 LP - 387 VL - 18 IS - 2 AU - P Catalano AU - E Fang-Hui AU - P M Som Y1 - 1997/02/01 UR - http://www.ajnr.org/content/18/2/385.abstract N2 - We report two cases of cystic lesions in the head and neck, one a cystic schwannoma and the other a neurofibroma, both of which showed fluid-fluid levels on MR images. The differential diagnosis of fluid-fluid levels in the head and neck region should include cystic hygromas, aneurysmal bone cysts, soft-tissue cavernous hemangiomas, and simple bone cysts. ER -