(Figure 3).
The tumor was found to be compressing the upper portion of the right atrium. The tumor was removed without the use of cardiopulmonary bypass. The teratoma seemed to have originated in the aorta because a 2 cm area of aortic adventitia needed to be shaved off (Figure 4).
Pathology report confirmed the mass to be a mature teratoma with tissue types from intestinal and respiratory epithelium, smooth muscle, skeletal muscle, cartilage, and glial tissue. There were no malignant or immature elements seen. The tissue from the aorta showed similar mature teratoma and the pericardium showed focal adhesions with no tumor infiltration (Figure 5 & 6).
The infant initially had problems feeding at her one and two month follow up visits, but was doing well at her 4 month post-operative follow up.