Week 395: Case 3

1. Presented by Peter Illei, M.D. and prepared by Andrea Subhawong, M.D.

54 year old male with a history of "malignant thymoma" and a new 7.5 cm anterior mediastinal mass that is adherent to the pleura and pericardium. A CD5 immunostain is shown below. CD117 was also positive.

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