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Hi! I have a silly question 🙂 My last biopsy showed cancer in the lymph nodes. I just had a PET scan and Dr. said no spread of the cancer. I asked if it was still in my lymph nodes and he said only a biopsy can show that. Is that correct? I thought the PETS scan would show if it was in the lymph nodes but obviously I am confused! Any info would be helpful. My oncologist is leaving next week and so communication with him is not at it’s best right now.
Pet scan can only show cancer that is more than approximately 5mm in size.
So you can have traces of melanoma in your lymph nodes (say 1mm big tumor) that is not detectable on pet but is detectable easily on biopsy.
I had 4 Lymph nodes removed and 2 of them had microscopic cancer cells, the other 2 didn’t. They did not detect them on my Pet scan because they were microscopic.
Hope this helps.
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