Haemangiopericytoma presenting as recurrent intracranial haemorrhage.

A 17-year-old girl presented with intracranial haemorrhage from a malignant haemangiopericytoma. During the course of treatment with surgery, radiotherapy and chemotherapy there were three further episodes of intracranial haemorrhage over a 9-month period, culminating in death from the effects of raised intracranial pressure. The pathology of haemangiopericytoma is reviewed with particular reference to factors predisposing to haemorrhage.