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Is there a cancer scan that screens your body or blood to find any trace of cancer if you think you have it?

My sister was found to have abnormal cells by her gyno. They took some of the cells multiple times and they have not found cancer, and STD or HPV but the cells keep growing. Also she is now discovering cysts in that area that she's never had before. She was wondering if there was a whole body cat scan or blood test that can tell a person if they have cancer at all, in any area or not, because she's worried she does but for some reason doctors aren't finding it. I also wanted to add that she did get the cells removed but they came back around the same area

Public Comments

1. Maybe these abnormal cells are precancerous like I had in 2000 and had it removed a couple of months later. I had CIN2 and had it surgecly removed to stop it from going to cancer of the cervix. Maybe she should get the abnormal cells removed to prevent it from developing into something not very nice
2. There's no single test or scan that can detect all types of cancer. In your sister's case, cancer screening would have nothing to do with the problem of abnormal cysts since the tissue type is not cancerous, and these types of cysts don't have any affect on the odds of getting cancer.
3. PET and CT scans can only detect tumors when they get to a certain size (several mm). And they are very expensive. Same with MRI. Blood markers aren't entirely reliable. Basically, you have to have symptoms and have a biopsy done to confirm.
4. The scans show that 'something' is there. A biopsy will say if it is cancer.