What is the clinical presentation of middle cerebral artery (MCA) occlusions in ischemic stroke?

Updated: May 27, 2020
  • Author: Edward C Jauch, MD, MS, FAHA, FACEP; Chief Editor: Helmi L Lutsep, MD  more...
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Middle cerebral artery (MCA) occlusions commonly produce the following:

  • Contralateral hemiparesis

  • Contralateral hypesthesia

  • Ipsilateral hemianopsia

  • Gaze preference toward the side of the lesion

  • Agnosia

  • Receptive or expressive aphasia, if the lesion occurs in the dominant hemisphere

  • Neglect, inattention, and extinction of double simultaneous stimulation, with some nondominant hemisphere lesions

The MCA supplies the upper extremity motor strip. Consequently, weakness of the arm and face is usually worse than that of the lower limb.

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