A 39-year-old member asked:
What's the difference in treatment between primary and metastatic cancer?
1 doctor answer • 3 doctors weighed in
Pathology 49 years experience
Site of origin: Primary cancer is the tumor that arises in the organ in question, whereas secondary cancer is one that arose somewhere else and spread to the organ in question. As an example, bronchogenic carcinoma is a primary cancer of the lung; breast cancer when it spreads to the lung is secondary cancer of the lung.
5.8k viewsReviewed >2 years ago
Last updated Jun 9, 2012
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