Wu, Ji-Hua Malignant perivascular epithelioid cell tumor of the retroperitoneum. [electronic resource] - International journal of clinical and experimental pathology 2013 - 2251-6 p. digital Publication Type: Case Reports; Journal Article ISSN: 1936-2625 Subjects--Topical Terms: FemaleHumansLiver Neoplasms--diagnostic imagingMiddle AgedPerivascular Epithelioid Cell Neoplasms--secondaryRetroperitoneal Neoplasms--pathologyUltrasonography