Occurrence of myeloproliferative disorder in patients with Noonan syndrome.
case_series · Level IV
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Abstract
We report four cases of Noonan syndrome associated with chronic myelomonocytic leukemia in childhood. These children shared some hematologic features: thrombocytopenia, splenomegaly in the first months of life, occurrence of chronic myelomonocytic leukemia without abnormalities of the initial bone marrow karyotype, and, in three cases, improvement of the hematologic disease. A common pathophysiologic process in such patients is suggested.
Medical subject headings
- Leukemia, Myelomonocytic, Chronic
- Noonan Syndrome