II. Definition

  1. Pedunculated tumor of cancellous bone

III. Pathophysiology

  1. Benign bony growth of ear canal
  2. Origin
    1. Tympanosquamous junction
    2. Tympanomastoid Suture

V. Signs

  1. Single, unilateral tumor at bone-cartilage junction

VI. Management

  1. Excise if Hearing Loss or pain

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