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Figure 2: (a) Photomicrograph shows singly lying tumour cells with moderate to marked pleomorphism, prominent nucleoli and scant to moderate amount of cytoplasm with focal giant cell formation (H&E, x400); (b-d) Tumour cells show immunopositive for CD20(b; × 400), CD30 (c; × 400), and ALK-1 (d; × 200)

Figure 2: (a) Photomicrograph shows singly lying tumour cells with moderate to marked pleomorphism, prominent nucleoli and scant to moderate amount of cytoplasm with focal giant cell formation (H&E, x400); (b-d) Tumour cells show immunopositive for CD20(b; × 400), CD30 (c; × 400), and ALK-1 (d; × 200)