Description
Haemangiopericytomas (HPCs) are rare intracranial tumours. Until 1993 HPC was considered as an angioplastic variant of meningioma.1 The recently published WHO classification of central nervous system (CNS) tumours classifies HPCs as mesenchymal non-meningothelial tumours combined with solitary fibrous tumours (SFTs), graded 1–3, and it is likely that this nomenclature will further evolve in the future.2 While these are highly vascular tumours, they often present with mass effect. Presentation with haemorrhage is also well described, but not commonly seen in clinical practice; this is partly due to the rarity of these tumours.3 This is only the 14th case presenting with intracranial haemorrhage and only the second case presenting with haemorrhage in the posterior fossa.
A 58-year-old right-handed woman, without significant medical history, presented with sudden-onset occipital headache. Initially she was fully conscious with no neurological deficits, but her clinical status deteriorated quickly, with increasing headache, nausea, vomiting...
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