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A 49-year-old member asked:

How to differentiate primary tumor cells from cells of metastases?

1 doctor answer1 doctor weighed in
Dr. Myron Arlen
Surgical Oncology 65 years experience
Close exam: primary tumor cells are well defined, arising in the organ that initiates the lesion. A cancer of the breast when biopsied shows adenoca cells of breast origin. When metastatic to liver or lung, biopsy will show the same cells as the primary . If the lesion arises in the liver it is not metastatic in terms of cells seen but liver tumor cells or hepatoma.
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Last updated Jun 26, 2014

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