macrocythemia

macrocythemia
The occurrence of unusually large numbers of macrocytes in the circulating blood. SYN: macrocytosis, megalocythemia, megalocytosis. [macrocyte + G. haima, blood]
- hyperchromatic m. an inexact term frequently used for macrocytes that contain an unusually large amount of hemoglobin, but are actually normochromic; although the total mass of hemoglobin is greater than normal (owing to the large cells), the percentage of hemoglobin in the cells is not greater than normal.

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mac·ro·cy·the·mia (mak″ro-si-theґme-ə) [macrocyte + hem- + -ia] a condition in which the erythrocytes are larger than normal, such as in macrocytic anemia and some types of liver disease. Called also macrocytosis and megalocytosis.

Medical dictionary. 2011.

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  • macrocytosis — SYN: macrocythemia. [macrocyte + G. osis, condition] * * * mac·ro·cy·to·sis .mak rə sī tō səs, rə sə n, pl to·ses .sēz the occurrence of macrocytes in the blood * * * n. the presence of abnormally large red cells (macrocytes) in the blood.… …   Medical dictionary

  • megalocytosis — SYN: macrocythemia. * * * meg·a·lo·cy·to·sis (meg″ə lo si toґsis) macrocythemia …   Medical dictionary

  • anisocytosis — Considerable variation in the size of cells that are normally uniform, especially with reference to red blood cells. [aniso + G. kytos, cell, + osis, condition] * * * an·iso·cy·to·sis .sī tō səs n, pl to·ses .sēz variation in size of cells and… …   Medical dictionary

  • hyperchromia — SYN: hyperchromatism. macrocytic h. hyperchromatic macrocythemia; a misnomer inasmuch as the red blood cells are larger than normal, the total amount of hemoglobin per cell is increased, but the percentage of hemoglobin per cell is usually in the …   Medical dictionary

  • megalocythemia — SYN: macrocythemia …   Medical dictionary

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