Carcinoma of the stomach most commonly affects the proximal part (which includes the fundus and the cardia). This is because the proximal stomach is exposed to more carcinogenic factors, including bile reflux and the influence of various environmental factors.
- The body and pylorus of the stomach are less frequently involved in carcinoma compared to the proximal part.
- The antrum is also a common site but less than the proximal portion of the stomach.
Thus, the most common site for carcinoma of the stomach is the proximal part.