Journal of Hematology & Thromboembolic Diseases
Open Access
ISSN: 2329-8790
ISSN: 2329-8790
Ulrich. Budde
Switzerland
Research Article
Acquired Von Willebrand Syndrome (AVWS) Type 2A as the Presenting Feature of JAK2 Wild type Thrombocythemia in a Child: Effectiveness of Platelet Reduction by Anagrelide
Author(s): Jan Jacques Michiels, Ulrich. Budde and Thomas KuehnJan Jacques Michiels, Ulrich. Budde and Thomas Kuehn
A 9-year-old Caucasian boy presented in 1994 with severe headache, attacks of migraine, aggressive behavior and minor bleeding symptoms. Initial abnormal laboratory data were a platelet count of 1596 � 109/L and slight splenomegaly on echogram. Low-dose aspirin 100 mg/day relieved the cerebral symptoms, but a pronounced spontaneous bleeding tendency became evident. Severe epistaxis, bruises, hematomas and gum bleedings resulted in an iron deficiency state (hemoglobin 5.7 mmol/L,hematocrit 0.30, MCV 77 fl, ferritine 6 ug/l) in November 1995. The combination of mucocutaneous bleeding, high platelet counts (1946 � 109/L), and increase of enlarged megakaryocytes in a bone marrow smear was consistent with the diagnosis of hemorrhagic thrombocythemia. Coagulation studies revealed the presence of an acquired von Willebrand syndrome type 2A featured by a prolonged Ivy bleeding time, near normal .. View More»
DOI:
10.4172/2329-8790.1000274