title: Hemangiopericytoma metastatic to liver: sonographic appearance.
mesh_terms: D001932:Brain Neoplasms / Q000175:diagnosis; D005260:Female; D006393:Hemangiopericytoma / Q000175:diagnosis / Q000556:secondary*; D006801:Humans; D008113:Liver Neoplasms / Q000175:diagnosis / Q000556:secondary*; D008875:Middle Aged; D014463:Ultrasonography