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Familial thrombocytosis
M Kikuchi1, T Tayama, H Hayakawa
1Department of Paediatrics, Hitachi General Hospital, Ibaraki, Japan.
Four cases of thrombocytosis in three successive generations of a family are described. High peripheral platelet count was found incidentally in the proband with cutaneous malignant lymphoma. Bone marrow examination showed megakaryocytic hyperplasia. Neither Philadelphia chromosome nor chimaeric bcr/abl junction was detected in marrow cells. In this family, thrombocytosis was thought to be transmitted by an autosomal dominant mode of inheritance.
Four cases of thrombocytosis in three successive generations of a family are described. High peripheral platelet count was found incidentally in the proband with cutaneous malignant lymphoma. Bone marrow examination showed megakaryocytic hyperplasia. Neither Philadelphia chromosome nor chimaeric bcr/abl junction was detected in marrow cells. In this family, thrombocytosis was thought to be transmitted by an autosomal dominant mode of inheritance.