Spontaneous subgaleal hemorrhage in a girl with impaired adrenaline-induced platelet aggregation.
BACKGROUND
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.


METHODS
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.


CONCLUSIONS
Spontaneous subgaleal hematoma can be associated with platelet function defect.
Department of Pediatrics, Faculty of Medicine, Srinakharinwirot University, Nakorn Nayok, Thailand. sakara4695@yahoo.com
Sakara
S
Hutspardol
Ampaiwan
A
Chuansamrit
Anucha
A
Soisamrong
D044466:Asian People; D001791:Blood Platelet Disorders / Q000150:complications*; D002648:Child; D004837:Epinephrine / Q000009:adverse effects*; D005260:Female; D006406:Hematoma / Q000209:etiology*; D006470:Hemorrhage / Q000175:diagnosis* / Q000209:etiology / Q000628:therapy; D006801:Humans; D010974:Platelet Aggregation / Q000187:drug effects*; D012535:Scalp / Q000098:blood supply; D016896:Treatment Outcome
D004837:Epinephrine