1 Department of Pediatrics, Duke University School of Medicine, Durham, North Carolina
The first case of primary thrombocytosis, with myocardial infarction and multiple thromboses, in childhood has been described. Despite persistent elevation of platelets, the patient has had no recurrence of thrombotic phenomena for 8 years following her original episode. The electrocardiographic abnormalities of inferior myocardial infarction which were present following the patient's acute episode gradually disappeared. Although the electrocardiogram was normal 5 years after the infarction, the vectorcardiogram revealed changes consistent with the diagnosis of an old diaphragmatic myocardial infarct.
Submitted on March 29, 1962
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