title: [Echographic patterns of orbital cholesteatomas and fibromyxomas].
abstract: Orbital cholesteatomas and fibromyxomas are relatively rare, but in echographic tissue differentiation both should be taken into consideration to avoid misdiagnosis. An orbital cholesteatoma may be mistaken for a hemangioma or a mixed tumor. Orbital cholesteatomas are distinguished by the following characteristics; high reflectivity, usually typical subperiostal location, wall or bone spikes, incompressibilty and immobility. Fibromyxomas are recognizable by their relatively regular structure, low to medium reflectivity and marked vascularity; they are poorly outlined, often showing signs of cellulitis.
  
  
  METHODS
  "periorbital malignancy" and the acoustic diagnostic group "sarcoma-lymphoma-pseudotumor".
mesh_terms: D000328:Adult; D002781:Cholesteatoma / Q000175:diagnosis* / Q000473:pathology / Q000648:ultrastructure; D003937:Diagnosis, Differential; D005260:Female; D005350:Fibroma / Q000175:diagnosis* / Q000473:pathology / Q000648:ultrastructure; D006801:Humans; D008297:Male; D009918:Orbital Neoplasms / Q000175:diagnosis*; D014463:Ultrasonography
vernacular_title: Zum echographischen Bild des orbitalen Cholesteatoms und des Fibromyxoms.