長期間の異物介在か誘囚と考えられた慢性中耳炎

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  • Subacute mastoiditis due to foreign bodies in the external auditory canal and middle ear. Report of two Cases.
  • Report of two Cases

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Case 1: A 37-year-old female with mental retardation presented with hearing loss and otalgia in the left ear for 2 months. Otoscopic examination revealed polypoid granulation tissue and otorrhea. The eardrum was not visualized due to severe swelling of the posterior meatal wall. CT of the temporal bone showed a diffuse soft tissue density extending from the bottom of the external auditory canal to the mastoid cavity with calcified tissue in the external auditory canal and the mesotympanum. Surgical exploration revealed foreign bodies most likely fragments of small stone in the external auditory canal accompanied by inflammatory granulation tisse.<BR>Case 2: A 13-year-old boy complained of recurrent otorrhea and hearing impairment of 3 months' duration. Otoscopic examination revealed polypoid granulation tissue in the external auditory canal. The whole eardrum was not observed due to the narrow external auditory canal. CT of the temporal bone showed a diffuse soft tissue density from the mesotympanum to the mastoid cavity. Surgery of the ear revealed foreign bodies most likely white-yellowish beans in the mesotympanum, and hemorrhagic granulation tissue extending from the mesotympanum to the mastoid cavity.

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