<prompt> Malignancy in pheochromocytoma is indicated by-Vascular invasionMitotic figuresCapsular invasionmetastasis  <response>: Because malignant and benign pheochromocytomas may have an identical histological appearance, the only absolute criterion of malignancy is metastasisThe diagnosis of malignant pheochromocytoma is made only when metastasis is demonstrated 