LYP: Expression of CD30 by scattered and clustered pleomorphic tumor cells. Histologic photomicrograph was captured using a digital camera (AxioCam MRc5; Zeiss) mounted on an Olympus microscope (BX45; Olympus). Objective lens: 400×/0.75 NA. Imaging software: Axio Vision Release 4.8.2 (Zeiss) and Adobe Photoshop Version 8.0 (Adobe Systems).