Intubation: The passage of a tube into an organ or body structure; commonly used to refer to the passage of a tube down the windpipe for artificial respiration.

Pneumonia: An inflammatory infection that occurs in the lung.

Pneumothorax: Bursting of the tiny air sacs in the lung tissue.

X-ray: One form of radiation that can be used at low levels to produce an image of the body on film or at high levels to destroy cancer cells.

Magnetic Resonance Imaging: A painless method using magnetic fields for taking pictures of internal organs.