Paget Paget
Paget Paget
  Educational Slide Program  

Audiogram of Patient with Paget's Disease  
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  Hearing loss in Paget's disease has traditionally been thought to be multifactorial. Causes proposed have included vascular shunts, invasion of the cochlea by pagetic bone, compression of the auditory nerve in the internal auditory canal, and fixation or stiffness in the ossicular chain. Based on histologic, audiologic, and bone densitometric studies, it has recently been proposed that changes in density or structure of the bone surrounding the cochlea are responsible for both the conductive and sensory components of pagetic hearing loss in nearly all cases. Pagetic hearing loss progresses at a more rapid rate than presbycusis does, and it can be severe. Treatment may prevent or slow the progress of hearing loss in Paget's disease. Surgical treatment of the conductive loss is usually not successful. In this audiogram the frequencies in Hertz are displayed across the top of the graph. The hearing sensitivity at each frequency is indicated with an x for hearing by air conduction and by a bracket for hearing by bone conduction. This case example of a left ear in a 72-year-old woman with Paget's disease involving the skull illustrates a high-frequency sensory loss and a low-frequency conductive loss.  
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