What a PET Scan Tells Your Surgeon About Mesothelioma

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Dr. Raja Flores explains how CT and PET scans provide different information when evaluating mesothelioma. CT scans show the tumor’s location and its relationship to nearby structures, while PET scans reveal metabolic activity by showing areas of increased sugar uptake. He discusses how surgeons consider these findings alongside cell type and a patient’s overall health to guide decisions about surgery and other treatments.
So the CAT scan helps define the anatomy. The PET scan gives you a sense of function. So, and it also defines anatomy in other places. So the CAT scan helps you figure out, is this involving the aorta? Is it involving the pulmonary artery? The PET scan makes sure that there is nothing that has spread outside the body, outside of the chest. So if it is spread, you should see that on the PET scan. The other thing the PET scan does is every cell in your body takes up sugar. Cancer cells take up more sugar than normal cells, and that's what a PET scan's measuring. How quickly is that cancer taking up the sugar? More sugar it takes up, it lights up hotter. If it lights up hotter, it means it's a more aggressive tumor. So a higher PET scan may make you decide, maybe we shouldn't operate on this patient because they're sick from these things, or we have this window of opportunity. We better jump on this patient and get them quickly to the Operating Room. So it's just one more thing in addition to histology. Is it epithelioid mixed, sarcomatoid? What are the breathing tests? How old are they? Do they have medical comorbidities? It's just one more thing to help you make a very important decision.
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