1. 
   haemangioendothelioma, epithelioid
   A tumour of medium-to-large veins, composed of plump-to-spindled endothelial cells that bulge into vascular spaces in a tombstone-like fashion. These tumours are thought to have 'borderline' aggression, where one-third develop local recurrences, but only rarely metastasize. It is unclear whether the...
   Found op http://www.mondofacto.com/facts/dictionary?haemangioendothelioma,+epithelio
   
   

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