title: A pulmonary metastasis from renal cell carcinoma seen on a lung perfusion scan.
abstract: A 75-year-old man with known pulmonary metastases from renal cell carcinoma had ventilation and perfusion scans to rule out a pulmonary embolism. The ventilation scan showed a round defect at the left lung base. The Tc-99m MAA perfusion scan revealed multiple areas of increased tracer activity, at least one of which corresponded to the patient's pulmonary metastases seen on chest radiograph. The most plausible explanation for this finding was that the tumor metastasis invaded the pulmonary artery causing shunting of the tumor vessels with the pulmonary artery.
authors.affiliation: Division of Nuclear Medicine, Baystate Medical Center, Springfield, Massachusetts 01199, USA.
authors.forename: A G
authors.initials: AG
authors.lastname: Boutselis
authors.forename: S
authors.initials: S
authors.lastname: Zu'bi
mesh_terms: D000368:Aged; D001159:Arterio-Arterial Fistula / Q000000981:diagnostic imaging / Q000209:etiology; D001981:Bronchial Arteries; D002292:Carcinoma, Renal Cell / Q000000981:diagnostic imaging* / Q000556:secondary*; D006801:Humans; D007680:Kidney Neoplasms / Q000473:pathology; D008168:Lung / Q000000981:diagnostic imaging; D008175:Lung Neoplasms / Q000000981:diagnostic imaging* / Q000556:secondary*; D008297:Male; D011651:Pulmonary Artery; D011877:Radionuclide Imaging; D013668:Technetium Tc 99m Aggregated Albumin; D014692:Ventilation-Perfusion Ratio; D014980:Xenon Radioisotopes
chemical_list: D013668:Technetium Tc 99m Aggregated Albumin; D014980:Xenon Radioisotopes