Primary intrathoracic extrapulmonary hemangiopericytoma. CT and MR findings

Extensive systemic metastases from primary central nervous system haemangiopericytoma

Primary intracranial tumours rarely metastasise outside of the central nervous system (CNS). This report describes a rare case of recurrent meningeal haemangiopericytoma with extensive systemic metastases, which eventually resulted in a fatal outcome. We discuss some prevailing theories as to the rarity of extracranial metastases from primary CNS haemangiopericytoma, and elucidate the epidemiology, imaging features, differential diagnosis, treatment, and prognosis of this unusual but surprisingly aggressive meningeal tumour. Besides aggressive treatment for local tumour control, patients with primary CNS haemangiopericytoma require long-term post-treatment surveillance to detect systemic metastases.

Resection of primary pleural pedunculate hemangiopericytoma

We are reporting an uncommon clinical case of primary pleural hemangiopericytoma, of which only a few reports have been published in the literature to date. A 40-year-old woman was treated by complete surgical resection of the tumor. No recurrence or metastasis was detected during follow-up at 12 months after the resection. The postoperative pathologic examination confirmed the diagnosis of primary pleural hemangiopericytoma. Details of the clinical and radiographic feature are presented.

Massive intrathoracic extrapleural haemangiopericytoma: deployment of radiotherapy to reduce vascularity

Haemangiopericytoma is a rare, highly vascular, slow-growing tumour which has both malignant and benign varieties. We report a case of a 63-year-old man in whom it was treated by initial radiotherapy followed by complete surgical excision. The preoperative radiotherapy markedly reduced the vascularity of the tumour. A brief review of the pathology and nature of tumour is provided.