Primary carcinoma is least common in:

Question

Quizplus · Accepted Answer

Primary carcinoma is least common in the small intestine, despite it making up a significant portion of the gastrointestinal tract. This is a well-documented phenomenon, though the exact reasons are not fully understood. Factors such as rapid cell turnover, the presence of a less carcinogenic environment due to rapid transit times, and the role of bile and pancreatic secretions may contribute to the lower incidence of cancer in this region.

Primary Carcinoma Is Least Common In