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Related to helmet cell: schistocyte


A red blood cell having an abnormal shape as a result of fragmentation that occurs as the cell flows through damaged small vessels.

[Greek skhistos, split; see schist + -cyte.]
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An occasional ([less than]1%) schistocyte or helmet cell also may be seen.
Microangiopathic hemolysis ([greater than or equal to]1% schistocytes plus helmet cells and the presence of any number of spherocytes)
Hemolytic uremic syndrome (HUS) is defined by a triad of microangiopathic hemolytic anemia (characterized by schistocytes and helmet cells, as shown in Fig.