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A member asked:

Mra revealed small right and rudimentery left posterior communicating arteries. what does this mean?

A doctor has provided 1 answer
Dr. Michael Gabor answered

Specializes in Diagnostic Radiology

There: are various normal anatomic variations in this region, and small PCAs are a common one. It simply means that these arteries are underdeveloped...relatively small in caliber...compared to other arteries around the Circle of Willis region.

Answered 12/18/2015

1.8k views

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