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Platelet Anisocytosis

Platelet anisocytosis means a large variation in the size of platelets in the blood. This anisocytosis can be found in the presence of an abnormally low number of platelets (thrombocytopenia) or an abnormally high number of platelets (essential thrombocytemia, secondary thrombocytemia).

Anisocytosis is caused by the synthesis of new platelets by the bone marrow because it is stimulated by the destruction of platelets in the blood (idiopathic thrombocytopenic purpura) or a disorder of the bone marrow itself (myeloproliferative syndrome, May-Hegglin anomaly, etc.).

Term of the Week

Hot zone

A hot zone is a section of a facility (sometimes an entire facility or even a city district) where there is a high risk of contamination by patients with an infectious disease. All individuals entering a hot zone must respect appropriate protective measures. By analogy, “cold zone” and “warm zone” are used to refer to areas where there is no infected individual or only individuals suspected of having an infection.