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skos:definition |
NCI: A pheochromocytoma that metastasizes to other anatomic sites. Common sites of metastasis include lymph nodes, bones, liver, and lung. Morphologic features associated with malignant pheochromocytomas include: atypical mitotic figures, capsular and vascular invasion, tumor cell necrosis, and high mitotic activity.,NCI: A malignant neoplasm of the adrenal gland medulla.
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