Dermoids of the eustachian tube: CT and MR findings with histologic correlation.
Two patients with congenital dermoids of the eustachian tube presented with recurrent otitis media and chronic otorrhea resistant to antimicrobial therapy. CT demonstrated fat density, homogeneous lesions, filling and expanding the eustachian tube. On MR, signal from the lesions was consistent with fat, and the relationship with the internal carotid artery was better delineated than by CT. Microscopically, the masses consisted of a conglomeration of ectodermal and mesodermal elements.
Kollias
S S
SS
Department of Radiology, Children's Hospital Medical Center, Cincinnati, Ohio, USA.
Ball
W S
WS
Prenger
E C
EC
Myers
C M
CM
D001706:Biopsy; D003884:Dermoid Cyst / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D003937:Diagnosis, Differential; D004428:Ear Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D004432:Ear, Middle / Q000473:pathology / Q000601:surgery; D005064:Eustachian Tube / Q000473:pathology* / Q000601:surgery; D005260:Female; D006801:Humans; D007223:Infant; D008279:Magnetic Resonance Imaging; D008297:Male; D009361:Neoplasm Invasiveness; D009367:Neoplasm Staging; D014057:Tomography, X-Ray Computed