A member asked:

What does slight posterior right frontal lobe sulcal effacement mean?

A doctor has provided 1 answer

Pressure: Normal gray matter has routine bumps and dips. If the frontal lobe seems not to have the usual presence of areas of prominence mixed with depressions (sulci), but instead is smooth, and effaced, this suggests external pressure smoothing out surface of brain, such as fluid from bleeding causing the change. Ask the radiologist what seems to be changing the anatomy.

Answered 5/19/2015

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