What is the term for the anemia characterized by a lack of intrinsic factor, leading to impaired vitamin B12 absorption?

A Pernicious anemia ✓
B Iron deficiency anemia
C Folic acid deficiency anemia
D Sickle cell anemia

Explanation

Pernicious anemia is caused by a lack of intrinsic factor, which is necessary for vitamin B12 absorption.

Source

Harrison's Principles of Internal Medicine
Hematology Hematology: Anemia Hematology: Anemia Medium MEDICAL Confidence: high