Which of the following statement is false regarding subclan steal syndrome ?: (A) Most commonly stenosed vessel is Left Subclan aery ., (B) Reversal of blood flow in the contralateral veebral aery ., (C) Reversal is to compensate for a proximal stenosis of Subclan aery ., (D) Majority cases are asymptomatic .
Answer is B. Most commonly involved Vessel - Left SCA > Right SCA Reversal in the blood flow in the ipsilateral veebral aery to compensate for a proximal stenosis of SCA . Majority of cases are asymptomatic but severe stenosis can lead to Transient veebrobasilar ischemia .