Lung cancer with unrelated pancreatic cancer

In January 2023 I was diagnosed with stage 4 non small cell adenocarcinoma of the lungs. They did a mediastinoscopy and took samples of the lymph nodes in the mediastinum. There were two "masses" seen in both lungs which had previously been called scar tissue from breast cancer radiation (both mucinous in each breast, but not the same cancer in 2006 and 2016). There were no samples taken from the lungs. Since February 2023, I have been treated with Yervoy and Opdivo infusions every 3 weeks until July of 2024, when they discontinued the Yervoy due to side effects. In October of 2024, after one of my quarterly CT scans, they saw a possible mass on the head of my pancreas so I had an MRI which confirmed it. In December I had a biopsy of the mass and it was confirmed that it was acinar cell carcinoma, 4 cm. in size. I have now had 3 different cancers, none of them related. So, here is my question: Is it possible that there was no lung cancer and that the lymph node involvement seen on the PET scan was from the pancreas? I am no scientist, but some of the markers for non small cell adenocarcinoma seem similar to those of the acinar cell carcinoma.