1. Presented by Pedram Argani, M.D. and prepared by Doreen Nguyen, M.D.

This is a 75-year-old woman with a large mediastinal/pulmonary mass.

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images/D Nguyen/8-18-14/case 1/10X_fascicles_450 pixels.jpg
images/D Nguyen/8-18-14/case 1/10X_fascicular_450 pixels.jpg
images/D Nguyen/8-18-14/case 1/10X_hemangiopericytomatous_450 pixels.jpg
images/D Nguyen/8-18-14/case 1/20X_mitoses_450 pixels.jpg