my sister was scheduled for thyroid surgery and the day before had to have preop testing and they found a mass on lower lobe of lung measuring 4.8 cm. They cancelled the surgery until they find out what the mass is.  She had phnemonia last winter for a short time.  Could this just be bacteria from the phnemonia?
Thanks for your question on Chat Doctor. I can understand your concern. Mass like lesion on lung is more commonly seen with lung cancer. But in some cases, fibrosis from the previous lung infection (pneumonia) can also cause such mass like lesion. For 100% confirmation, she needs to get done CT thorax and Biopsy from the mass. Sometimes, bronchoscopy and Biopsy are also needed. So consult pulmonologist and discuss all these. Recurrence of pneumonia due to bacteria is less likely. Possibility of lung cancer is more likely. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.