<prompt> Commonest site for lymphoma in GIT is :StomachDuodenumIleumRectum  <response>: Ans is a ie stomach The stomach is the most frequent extranodal site for lymphomas. Microscopically, the vast majority of gastric lymphoid tumors are non-Hodgkins lymphomas of B cell origin, Hodgkins disease involving the stomach is extremely uncommon. - Harrison 