In which of the following segments of the gastrointestinal tract is primary carcinoma least common?

In which of the following segments of the gastrointestinal tract is pr

1.	In which of the following segments of the gastrointestinal tract is primary carcinoma least common?
A.	esophagus
B.	stomach
C.	small intestine
D.	colon
E.	mouth
Answer» D. colon

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In which of the following segments of the gastrointestinal tract is primary carcinoma least common?

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