AIM To describe the clinicopathological features of 33 aneurysmal fibrous histiocytomas (AFH), including five cases with a haemangiopericytoma-like pattern. METHODS Thirty three cases of AFH were studied by using routine histology and immunohistochemistry for factor XIIIa, the "cell activity marker" E9 (anti-metallothionein), NK1C3 (CD57), smooth muscle actin (SMA), factor VIII, ulex europaeu...

Haemangiopericytoma is a rare soft tissue tumour characterised by tightly packed tumour cells situated around thin walled endothelial lined vascular channels, ranging from capillary sized vessels to large gaping sinusoidal spaces. The tumour cells are surrounded by reticulin and are negative for muscle, nerve and epithelial markers. The diagnosis of extra-pulmonary intra-thoracic, extra-pleural...

BACKGROUND Auriculotemporal nerve syndrome is characterised by recurrent episodes of facial gustatory flushing and/or sweating along the cutaneous distribution of the auriculotemporal nerve. The condition is rare in children and is normally a sequel of perinatal birth trauma. We report a case of a sixteen-month-old boy referred by paediatric oncology with recurrent, unilateral facial flushing o...

Haemangiopericytoma (HPC) is a rare tumour with a predilection for the central nervous system. Though previously thought to originate from the meninges and ventricular walls, HPC's are currently accepted as distinct mesenchymal neoplasms unrelated to meningiomas. Haemangiopericytomas have been previously reported to be associated with the production of insulin like growth factor II (IGF-II) and...