An unusually great increase in the number and proportion of leukocytes in the circulating blood or the tissues; i.e., much more than that ordinarily observed in most instances of leukocytosis.

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hy·per·leu·ko·cy·to·sis (hi″pər-loo″ko-si-toґsis) [hyper- + leukocyte + -osis] extreme leukocytosis, as seen in certain forms of leukemia.

Medical dictionary. 2011.

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  • hyperneocytosis — Hyperleukocytosis in which there are considerable numbers of immature and young cells (especially in the granulocytic series); i.e., a “shift to the left” in the hemogram. SYN: hyperskeocytosis. [hyper + G. neos, new, + kytos, cell, + osis,… …   Medical dictionary

  • hyperorthocytosis — Hyperleukocytosis in which the relative percentages of the various types of white blood cells are within the normal range and immature forms are not observed. [hyper + G. orthos, correct, + kytos, cell, + osis, condition] * * *… …   Medical dictionary

  • Hyperleukozytose — Klassifikation nach ICD 10 D72.8 Hyperleukozytose …   Deutsch Wikipedia

  • leukocytosis — An abnormally large number of leukocytes, as observed in acute infections, inflammation, hemorrhage, and other conditions. A white blood cell count of 10,000 or more per mm3 usually indicates l. Most examples of l. represent a disproportionate… …   Medical dictionary

  • leukostasis — leu·ko·sta·sis (loo″ko staґsis) increased blood viscosity and hypercoagulability, seen in leukemia that is accompanied by hyperleukocytosis …   Medical dictionary

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