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A 39-year-old member asked:

What's the difference in treatment between primary and metastatic cancer?

1 doctor answer3 doctors weighed in
Dr. Gurmukh Singh
Pathology 50 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.
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Last updated Jun 9, 2012

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