This individual has a mass in the upper part of the lung. Although the cause of the mass can be suspected, based on this person's history, there are many diseases that can produce lung lesions.

This is a CT scan of the upper lungs. This individual has a mass in upper part of the right lung (left side of picture).

This is a CT scan of the upper chest showing a mass in the right lung (seen on the left side of the picture).

This picture is a chest x-ray of a person with a lung mass. This is a front view, where the lungs are the two dark areas and the heart and other structures are visible in the middle of the chest. The x-ray shows a mass in the right upper lung, indicated with the arrow (seen on the left side of the picture).

This is a chest x-ray showing a mass in the right lower lung near heart (seen on the left side of the picture).

A CT scan showing a mass in right lower chest near the heart (left side of photograph).

This CT scan shows a cross section of the lungs of a person with lung cancer. The two dark areas in the middle of the screen are the lungs. The light areas in the right lung represent the cancer (left side of picture).

Secondhand smoke has been classified as a known cause of lung cancer in humans (Group A carcinogen).

Yellow nail syndrome is characterized by yellow nails that lack a cuticle, grow slowly, and are loose or detached (onycholysis). Yellow nail syndrome is most commonly associated with lung disorders, and with lymphedema.

Air is breathed in through the nasal passageways, travels through the trachea and bronchi to the lungs.