title: Extravascular obstruction of the superior vena cava by hematoma after open-heart surgery and diagnosis by scintigraphy.
mesh_terms: D002305:Cardiac Tamponade / Q000000981:diagnostic imaging*; D005260:Female; D006350:Heart Valve Prosthesis; D006406:Hematoma / Q000000981:diagnostic imaging*; D006801:Humans; D008875:Middle Aged; D008943:Mitral Valve; D011183:Postoperative Complications / Q000000981:diagnostic imaging*; D011877:Radionuclide Imaging; D013577:Syndrome; D013667:Technetium; D014683:Vena Cava, Superior
chemical_list: D013667:Technetium