Logic

Many a times in medical school, logic is essential.

So, the question is, what is the most common tumor in the gastrointestinal tract?

Carcinoid pop out from my mind when I heard this question but then when I inject some logic, it doesn't seem to be the answer seeing that there's not so many enteroendocrine cell in the gut (well, RELATIVELY, it's not that many really).

And yes, carcinoid is not the MOST common tumor in GIT.