title: Fluid-fluid levels in benign neurogenic tumors.
abstract: 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.
authors.affiliation: Department of Otolaryngology, Mount Sinai School of Medicine, City University of New York, USA.
authors.forename: P
authors.initials: P
authors.lastname: Catalano
authors.forename: E
authors.initials: E
authors.lastname: Fang-Hui
authors.forename: P M
authors.initials: PM
authors.lastname: Som
mesh_terms: D000328:Adult; D003390:Cranial Nerve Neoplasms / Q000175:diagnosis; D003560:Cysts; D005260:Female; D006258:Head and Neck Neoplasms / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009442:Neurilemmoma / Q000175:diagnosis*; D009455:Neurofibroma / Q000175:diagnosis*; D014276:Trigeminal Nerve