Least predilection for distal ileum ?
Ans. is 'd' i.e., Zollinger-Ellison syndrome Zollinger-Ellison syndrome (gastrinoma) does not usually occur in distal ileum. Carcinoid syndrome, Meckel's diveiculum and crohn disease can affect distal ileum.
Carcinoid syndrome
Meckel's diveiculum
Crohn disease
Zollinger - Ellison syndrome