What does the term anisocytosis refer to?

The term anisocytosis specifically refers to the presence of red blood cells (erythrocytes) of unequal size within a blood sample. This condition often indicates a variation in the shape and size of red blood cells, which can be caused by a variety of underlying medical conditions. For instance, anisocytosis is frequently seen in cases of anemia, where the production or regulation of red blood cells is affected, leading to an uneven size.

Recognizing anisocytosis can be an important indicator for healthcare providers when diagnosing and treating various hematological disorders. The characteristic differences in red blood cell size can be assessed using a blood smear, and quantifying these variations helps to provide insight into the patient's hematologic status.