I had a PET Scan done in July. My report did not provide all of the information that you had in your report. However, I did have a nodule that was 2 cm. This nodule showed up red on the PET Scan which indicated it was probably malignant. I had a biopsy that verified it and due to the size of the nodule, 2 cm or larger, they had to remove the top lobe of my left lung. The PET Scan covered my brain to mid thigh and this was the only red indicator. If you can see your scan that would be a good start to see if there are any nodules or other nodes that show red. During the surgery they collected samples of several lymph nodes and all of them were negative for cancer. Other than the swelling and intense pain for nearly 2 months everything came out OK and I am cancer free. Of course I could not get pain medications after 2 weeks because everyone said that they were on back order from the manufacturer.