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  • Title: Superior vena cava obstruction in fibrosing mediastinitis: demonstration of right-to-left shunt and venous collaterals.
    Author: Kistler AM, Silverman ED, Sharpe MB, Yudt WM, Camponovo EJ.
    Journal: Nucl Med Commun; 1991 Dec; 12(12):1067-74. PubMed ID: 1811201.
    Abstract:
    Multiple venous collateral pathways have been described in patients with superior vena cava obstruction. Systemic venous-to-pulmonary venous communication is the most unusual, having been described in a few cases of thoracic malignancy. In a patient with fibrosing mediastinitis radionuclide venography with 99Tcm-macroaggregated albumin demonstrated a systemic venous-pulmonary venous right-to-left shunt in addition to systemic and portal venous collaterals. It is apparent that systemic venous-to-pulmonary venous anastomoses may occur in the absence of malignant disease.
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