Which of the following is a major reason that metastasis is characteristic of malignant but not benign tumors?
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Correct answer: Metastasis needs invasion, intravasation, circulatory survival, extravasation, and distant growth
Metastasis is a complex multistep process requiring cellular capabilities like invasion, vascular entry, survival in circulation, exit, and colonization — hallmarks typically present only in malignant cells.
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