Successfully operated infraperitoneal hemangiopericytoma infiltrating the left ureter

: Hemangiopericytoma is a very rare tumour originating from the lining cells of small vessels. Despite benign histology it is clinical presentation similar to malignancy. There are only less than hundred cases reported sporadically in the literature. Authors report a case and successful radical removal of an infraperitoneal hemangiopericytoma infiltrating the left ureter. The literature of this strange, rare pathology is also analysed in the article.