Least predilection for distal ileum -: (A) Carcinoid syndrome, (B) Meckel's diverticulum, (C) Crohn disease, (D) Zollinger - Ellison syndrome
Answer is D. Ans. is 'd' i.e., Zollinger-Ellison syndromeo Zollinger-Ellison syndrome (gastrinoma) does not usually occur in distal ileum,o Carcinoid syndrome, Meckel's diverticulum and crohn disease can affect distal ileum.