Pernicious anemia can occur when:
A) The stomach has been removed.
B) The terminal ileum has been removed.
C) There is a deficiency of intrinsic factor.
D) All of these
E) The stomach has been removed and there is a deficiency of intrinsic factor.

Question

Quizplus · Accepted Answer

Pernicious anemia can occur when any of the following conditions are present: the stomach has been removed, the terminal ileum has been removed, or there is a deficiency of intrinsic factor. A deficiency of intrinsic factor is often associated with gastric atrophy, which can result from autoimmune gastritis or from bacterial overgrowth in the stomach. Removal of the terminal ileum can also lead to pernicious anemia, as this is the site of vitamin B12 absorption in the small intestine. Therefore, the best choice is D, as all of these conditions can cause pernicious anemia.

Pernicious Anemia Can Occur When