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Patients with diverse causes of thrombocytopenia are sometimes erroneously diagnosed as having idiopathic thrombocytopenic purpura. However, for the prevention of misdiagnoses, careful inspection of peripheral blood smear is of utmost importance. This report presents 4 cases presumed as acute idiopathic thrombocytopenic purpura that were finally identified as pseudothrombocytopenia, inherited macrothrombocytopenia (MHY9 disorders) possibly Epstein syndrome, Bernard-Soulier syndrome, and drug-induced thrombocytopenia. They draw attention to the importance of platelet morphology to exclude inherited macrothrombocytopenia and history to exclude drug-induced thrombocytopenia. Better diagnostic approaches would be possible by the awareness of these relatively rare causes of isolated thrombocytopenia.<\/jats:p>","DOI":"10.1177\/1076029607302444","type":"journal-article","created":{"date-parts":[[2007,7,17]],"date-time":"2007-07-17T19:52:55Z","timestamp":1184701975000},"page":"329-333","source":"Crossref","is-referenced-by-count":5,"title":["Pitfalls in the Diagnosis of Immune Thrombocytopenic Purpura in Children: 4 Case Reports"],"prefix":"10.1177","volume":"13","author":[{"given":"Bet\u00fcl","family":"Biner","sequence":"first","affiliation":[{"name":"Department of Pediatrics, Division of Pediatric Hematology-Oncology, School of Medicine, Trakya University, Edirne, Turkey,"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"\u00d6mer","family":"Devecio\u011flu","sequence":"additional","affiliation":[{"name":"Department of Pediatrics, Division of Pediatric Hematology-Oncology, Istanbul School of Medicine, Istanbul University, Istanbul, Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Muzaffer","family":"Demir","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine, Division of Hematology, School of Medicine, Trakya University, Edirne, Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2007,7,1]]},"reference":[{"key":"atypb1","unstructured":"Beardsley DS, Nathan DG Platelet abnormalities in infancy and childhood. 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