J Med Assoc Thai 2010; 93 (5):625

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Spontaneous Subgaleal Hemorrhage in a Girl with Impaired Adrenaline-Induced Platelet Aggregation
Hutspardol S Mail, Chuansamrit A , Soisamrong A

Introduction: Subgaleal hematomas usually develop followed a birth trauma in neonates. This entity is extremely rare in
older children and may be associated with coagulation disorders or subaponeurotic vascular malformations.

Case Report:
The authors report a spontaneous subgaleal hematoma in a 9-year-old girl without scalp injury. Only platelet
aggregation test was identified as an impaired responsiveness of platelets to adrenaline with normal coagulogram. This
patient underwent both computerized tomography and complete magnetic resonance imaging including angiography and
venography of the head. Of these, extensive bilateral frontotemperoparietal subgaleal hematoma was observed without
vascular malformation.

Conclusion:
Spontaneous subgaleal hematoma can be associated with platelet function defect.

Keywords: Spontaneous subgaleal hematoma, Impaired adrenaline-induced platelet aggregation

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