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Definition: Pathology is the study of normal and diseased body tissues.

A pathologist is a doctor who specializes in the study of normal and diseased tissues.

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Definition: Oncology is the branch of medicine that focuses on the study and treatment of cancer.

An Oncologist is a doctor who specializes in diagnosing and treating cancer.

Source: Living with Lung Cancer by Cox, Carr, and Lee

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Definition: Oat cell cancer is a type of cancer in which the cells resemble oats. It is one of two types of cancer found in the lungs. The other type is non-small cancer.

Oat cell cancer has two stages: Limited Stage and Extensive Stage

# Limited Stage is when the oat cell cancer is confined within the chest.
# Extensive Stage is when the oat cell cancer spreads outside of the chest area.

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