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Contrast-enhanced images in a 62-year-old man with fever, cough and confusion eight days after chemotherapy for Waldenström macroglobulinemia. (A) Computed tomography scan of the lungs showing bilateral nodular opacities with a cavity in the right lower lobe of the lung (arrow). (B) Magnetic resonance imaging scan of the brain showing multiple ring-enhancing lesions with surrounding edema.
