AHUS mistaken for TTP associated with COVID-19: a case report

Abstract

Abstract Thrombotic thrombocytopenic purpura (TTP) and atypical hemolytic uremic syndrome (aHUS) are both thrombotic microangiopathies that share several clinical traits including microangiopathic hemolytic anemia, thrombocytopenia, and organic damage. There is inherent opportunity for misdiagnosis. As thrombocytopenia and thrombus are strongly related to COVID-19, it may be more difficult to tell an aHUS from a TTP when COVID-19 is present. Thus, we describe a patient presenting with severe COVID-19 who was misdiagnosed with TTP but in the end corrected to aHUS. We suggest that perform detection to ADAMTS-13 activity and complement gene mutation as soon as possible is necessary.