A subsequent CAT scan showed three tumors cushioning Yawnick's ... and a PET scan before learning he had primary mediastinal ...

Yawnick underwent a CAT scan that confirmed the presence of three tumors around his heart. Subsequent biopsies and a PET scan led to a diagnosis of primary mediastinal B-cell non-Hodgkin lymphoma.

Patients with a immunohistochemically defined, germinal-center tumor subtype have an ... non-GC DLBCL, and mediastinal large B-cell lymphoma. GC and non-GC DLBCL differ with respect to the cell ...