Which of the following statements about adenocarcinoma of the lung is

1.	Which of the following statements about adenocarcinoma of the lung is true?
A.	It is the most common histologic subtype.
B.	It is treated differently than squamous cell carcinoma.
C.	It is less likely to metastasize to the brain than other histologies.
D.	It is rarely associated with TTF-1.
Answer» B. It is treated differently than squamous cell carcinoma.

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Which of the following statements about adenocarcinoma of the lung is true?

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