Pernicious anemia (also called Addison's anemia) is a type of red blood cell disorder caused by impaired vitamin B12 metabolism. Vitamin B12 is primarily absorbed by the small intestine, after being bound to intrinsic factor secreted by parietal cells of gastric mucosa. When this process is disrupted by conditions like atrophic gastritis, celiac disease, small bowel resection etc, B12 deficiency ensues.<unk><unk>  leukemia must be differentiated from leukemoid reaction,<unk>  neutrophilic leukemia, and acute myeloid leukemia.
Chronic myelogenous leukemia differential diagnosis
Acute myeloid leukemia differential diagnosis
Myelofibrosis differential diagnosis
Myeloproliferative neoplasm differential diagnosis
Hairy cell leukemia differential diagnosis
Acute lymphoblastic leukemia differential diagnosis
Myelodysplastic syndrome differential diagnosis
Non-Hodgkin lymphoma other diagnostic studies