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Granulocytic Sarcoma in Kidney : Gross morphology

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Granulocytic sarcoma (also previously known as Chloroma) refers to tumor-like lesions of extramedullary myeloid leukemia. They have characteristic green color on cut surface due to myeloperoxidase– as illustrated in this case – which fades on standing. Immunoreactivity for chloroacetate esterase and myeloperoxidase is diagnostic.

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