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  • Stage 1 : The tumor grows outside the middle ear and causes numbness. The tumor also affects the bone.
  • Stage 2 : The tumor is present in the middle ear and is not causing any facial numbness.
  • Stage 3 : The tumor reaches the nearby salivary gland, skull base, or jaw joint.
  • Stage 4 : The tumor grows outside the middle ear and causes numbness. The tumor also affects the bone.
  • Stage 5 : The tumor is present in the middle ear and is not causing any facial numbness.
  • Stage 6 : The tumor reaches the nearby salivary gland, skull base, or jaw joint.