12-22-2008, 12:33 AM
Wow. This is a lot of information. Melanoma and lymphoma are not related. There is a theory that people with one type of cancer are more likely to develop a second cancer, different type, because of a problem in their immune system.I've never heard of a'false positive'PET scan. However, a PET is not diagnostic in that it won't tell you WHAT TYPE of cancer it is. If she really does have lymphoma, it is really bad luck. Low grade is better, though. Sometimes they just watch it. Depends a lot on the age of the patient.
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