title: Radiography, Doppler sonography, and MR angiography of malignant pulmonary hemangiopericytoma.
mesh_terms: D000368:Aged; D006393:Hemangiopericytoma / Q000175:diagnosis*; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis*; D018810:Magnetic Resonance Angiography; D008297:Male; D018608:Ultrasonography, Doppler