I'm sorry for any confusion, but the term "Panama Canal Zone" is geographical and historical, not medical. It refers to the area surrounding and including the Panama Canal that was controlled by the United States from 1903 to 1979, and it's not a medical concept that would have a definition in a medical context.

"Panama" is not a recognized medical term or condition in healthcare and medicine. It might be a reference to a location, but it does not have a specific medical meaning in itself.