Two cases of thymoma, one epiithelial and one seminoma type are presented. In both instances, the thymoma infiltrated and later perforated the gastrointestinal tract by direct extension. One is the 30th reported case of thymoma with extrathoracic metastasis; this patient had metastasis to the bone marrow and kidney. Neither patient had myasthenia gravis associated with the thymic tumor.