Phenotypical and molecular distinctness of sinonasal haemangiopericytoma compared to solitary fibrous tumour of the sinonasal tract. - Agaimy, Abbas; Barthelmeß, Sarah; Geddert, Helene; Boltze, Carsten; Moskalev, Evgeny A.; Koch, Michael; Wiemann, Stefan; Hartmann, Arndt; Haller, Florian (Histopathology, 2014)