Case 1: Question 1

A 60-year-old man collapsed while at work. After he regained consciousness in the emergency room, neurological exam was performed with the following abnormalities noted:

  • paralysis in the right arm and leg
  • dysarthria
  • deviation of the tongue to the left when protruded
  • loss of vibration, proprioception and discriminative touch sensation on the right side of the body (the face has normal sensation).

Question 1: Which of the major long tracts -- dorsal column/medial lemniscus system, corticospinal tract, spinothalamic tract.(anterolateral system) --  is/are involved?

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