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Intern Med. 1993 Mar;32(3):257-60.

Intracaval and intracardiac extension of malignant thymoma.

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  • 1Department of Internal Medicine, Hyogo Brain and Heart Center, Himeji, Japan.


A case of malignant thymoma presenting as the superior vena cava syndrome is reported. A 56-year old male was admitted with superior vena cava syndrome. CT and NMR-CT scan showed a solid homogenous superior mediastinal mass; which filled the lumen of the superior vena cava and the right atrium. A biopsy of the right atrial mass showed myxoma, and operation was performed. Histopathologically the tumor was diagnosed as thymoma. Intracaval and intracardiac extension of a thymoma is very rare.

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