Isolated malabsorption of vitamin B12 causing megaloblastic anemia and hyperpigmentation in a Nigerian. Report of case.
D000748:Anemia, Macrocytic; D006801:Humans; D008297:Male; D008875:Middle Aged; D010859:Pigmentation Disorders; D014805:Vitamin B 12 / Q000378:metabolism*; D014806:Vitamin B 12 Deficiency / Q000150:complications*
D014805:Vitamin B 12