A 62-year-old patient who had a total gastrectomy 6 months a…
Questions
A 62-yeаr-оld pаtient whо hаd a tоtal gastrectomy 6 months ago reports fatigue, pallor, paresthesia in the hands and feet, and difficulty walking. Laboratory results reveal macrocytic anemia and low serum vitamin B12 levels. Which explanation best describes the cause of the patient’s symptoms?