Portosystemic Shunting in Superior Vena Cava Obstruction by Tumor Demonstrated on Ventilation-Perfusion Lung Scan

Portosystemic shunting in superior vena cava obstruction by tumor demonstrated on ventilation-perfusion lung scan.

Extrapulmonary deposition of macroaggregated albumin particles on lung perfusion scintigraphy occurs in the presence of right-to-left shunting, as demonstrated in this case of portosystemic shunting related to superior vena cava obstruction by germ cell tumor of the mediastinum. The case demonstrates the importance of examining tracer deposition within the entire field of view on (99m)Tc-macroa...

Spurious lung perfusion ventilation defect on planar ventilation-perfusion scan detected by SPECT imaging

Pulmonary embolism (PE) is a preventable cause of morbidity and mortality which needs prompt recognition. Ventilation-perfusion (V/Q) scan is a well-established diagnostic test for evaluation of suspected PE. We report a 32-year-old woman with history of rheumatologic disease and acute dyspnea, who was referred for V/Q scintigraphy. The planar images revealed multiple mismatched defects through...

Askin Tumor Presenting as Superior Vena Cava Syndrome

CT findings in superior vena cava obstruction.

T HE CLINICAL manifestations of SVCS were first described by Hunter in 1757, secondary to a syphilitic aneurysm of the ascending aorta.’ SVCS usually has an insidious presentation and eventually leads to a collection of signs and symptoms that together are diagnostic of the disorder. Obstruction of the SVC may result from external compression or intrinsic thrombotic disorders, and leads to prox...

Melioidosis mimicking primary lung malignancy with superior vena cava obstruction

Department of Respiratory Medicine, Cairns Hospital, Level 5, Block B, 165 The Esplanade, Cairns, Queensland, 4870, Australia Department of Medicine, Cairns Hospital, Cairns, Australia, and College of Medicine and Dentistry, James Cook University Cairns Campus, Cairns, Australia Department of Respiratory Medicine, Cairns Hospital, Cairns, Australia Department of Medicine, Cairns Hospital, Cairn...