Figure 2 .
(A) Gross pathologic finding of the tumor: an encapsulated elastic mass. The cut surface of tumor revealed a light brown color, an internal lobulated structure with a portion of capsulation invasion. (B)Histological findings of the tumor: the tumor shows a proliferation of spindle-shaped epithelial cells with many lymphocytes (original magnification: 100×).
Takenaka et al. Journal of Cardiothoracic Surgery 2012 7:68 doi:10.1186/1749-8090-7-68