This is based on a recent review by George and Nester in NEJM on TMA syndromes. Looking and classifying TMA in this format is much more pathophysiologic than using terms such as HUS and TTP
Out with HUS and TTP and let's use more CAUSE based TMA as the term to help understand pathophysiology and then use the appropriate treatment
**( complement mediated TMA) is a better term then using atypical HUS as it gives more information regarding pathophysiology and not confuse us.
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