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Items: 4

1.

Polycythemia vera

Polycythemia vera, the most common form of primary polycythemia, is caused by somatic mutation in a single hematopoietic stem cell leading to clonal hematopoiesis. PV is a myeloproliferative disorder characterized predominantly by erythroid hyperplasia, but also by myeloid leukocytosis, thrombocytosis, and splenomegaly. Familial cases of PV are very rare and usually manifest in elderly patients (Cario, 2005). PV is distinct from the familial erythrocytoses (see, e.g., ECYT1, 133100), which are caused by inherited mutations resulting in hypersensitivity of erythroid progenitors to hormonal influences or increased levels of circulating hormones, namely erythropoietin (EPO; 133170) (Prchal, 2005). [from OMIM]

MedGen UID:
45996
Concept ID:
C0032463
Neoplastic Process
2.

Polycythaemia

Polycythemia is diagnosed if the red blood cell count, the hemoglobin level, and the red blood cell volume all exceed the upper limits of normal. [from HPO]

MedGen UID:
18552
Concept ID:
C0032461
Disease or Syndrome
3.

Polycythemia

Polycythemia is diagnosed if the red blood cell count, the hemoglobin level, and the red blood cell volume all exceed the upper limits of normal. [from HPO]

MedGen UID:
504995
Concept ID:
CN001719
Finding
4.

Increased hematocrit

An increase in the volume of packed erythrocytes in a blood specimen. [from HPO]

MedGen UID:
68692
Concept ID:
C0239935
Finding
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