169. A 60-year-old man comes to the physician because of a 6-month history of light-headedness, numbness and paresthesias of his hands and feet, and fatigue. Physical examination shows pallor anddecreased positional and vibration senses. Laboratory studies show:HemoglobinHematocritMean corpuscular volumeSerum9 g/dL27%102 μm³GastrinIntraluminal stomach acidmarkedly increasedmarkedly decreasedThe most likely cause of this patient's symptoms is destruction of which of the following labeled areas in the photomicrograph of normal stomach mucosa?

A 60-year-old man with symptoms including light-headedness, numbness, and paresthesia of his hands…

Answered: 169. A 60-year-old man comes to the…

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