She was diagnosed with non small cell lung cancer stg. 4 and died 29 days later. before she was diagnosed she seemed fine. how could this happen?

Small cell cancer: Most cancers have a volume doubling time of about 3 months, except small cell cancer. Problem with small cell cancer is that it goes fast, may have no symptoms initially and can go be in multiple organs the time it is diagnosed, and can include the lining of the heart and can cause fluid and compression of the heart.

It is common.: Lung cancer is in stage iii or stage IV in 75% of patients when it is first diagnosed. These are late stages of cancer when it is unlikely that it can be cured. The reason is because lung cancer frequently creates no symptoms until late in its development. Until recently there has been no screening test for lung cancer so symptoms were the main way of diagnosing it.

No symptoms early on: Unfortunately, early stages of lung cancer often do not cause any symptoms. It is not until the late stages of lung cancer do patients have symptoms that prompt a medical evaluation the then leads to the lung cancer diagnosis. In very advanced stage-iv lung cancer, patients may die in a short period of time due to a variety of reasons. Unfortunately, this is often true for any stage-iv cancer.