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Intracranial Stenosis
Hi. My 75 yo father had a stroke 2 1/2 years ago due to a 90% blocked artery in his brain.  They did an angioplasty but were unable to place a stent.  Originally they told us they took the artery from 90% blocked to 30%.  He's had three CTA scans since the angioplasty and each time they tell us there is no further narrowing but that they may not have had as much success with the angioplasty as they had thought.  
He is pretty stable.  He does have aphasia from the original stroke and his speech fluctuates due to circumstances like if he's sick or tired.  
Thursday morning he had an incident (TIA?) where he was speaking only Spanish (his first language).  We took him to the ER where he looked fine.  His neurologist had another CTA scan done--same as before.  He is no worse.  But the radiologist who read it once again says the artery is very narrow and there is indication of growth of collateral arteries.  
His neurologist is leaning toward keeping on the same path we've been on as there are no changes and he has been so stable.  She thinks he may have been dehydrated (he'd been shoveling snow and running the snow blower).  Our concern is that a more invasive investigation and/or intervention may be riskier than the risk of just doing what we've been doing.  
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