@caralion I'm not a doctor, but I believe that might indicate a second type of cancer cell that turns blue when the pathologist stains it to analyze it. there seem to be a few types of these cancers that can occur in the lung. one of them is extranodal b cell lymphoma, which might explain the tumor in your parotid gland. whatever the case may be, it seems complicated and important for you to have the best possible assessment and care. how soon will you speak with your doctor?