Iron deficiency anemia seen in -
In Chronic Renal Failure though dominant cause of anemia is diminished synthesis of erythropoietin. Other contributors are extra corpuscular defect that reduces RBC life span and iron deficiency due to platelet dysfunction and increased bleeding often encountered in uremia. Ref: robins 9/e pg:655
CRF
Billroth II operation
Hookworm
Celiac sprue
Haematology