%0 Journal Article %A P Catalano %A E Fang-Hui %A P M Som %T Fluid-fluid levels in benign neurogenic tumors. %D 1997 %J American Journal of Neuroradiology %P 385-387 %V 18 %N 2 %X 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. %U https://www.ajnr.org/content/ajnr/18/2/385.full.pdf