Lung adenocarcinoma is a cancer of the lung and the most common type of lung cancer. It is a form of adenocarcinoma, a cancer arising from epithelial cells with glandular characteristics. It is classified as a non-small cell lung cancer.

In the news, Pope Leo was diagnosed with lung adenocarcinoma, and doctors removed the lower lobe of his right lung in an operation intended to remove the cancerous tissue. The Vatican had not disclosed the tumour’s size or whether the cancer had spread to nearby lymph nodes.