Hypochromic anemia

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Hypochromic anemia is a form of anemia characterized by a disproportionate reduction of red cell hemoglobin in proportion to the volume of the erythrocyte and an increased area of central pallor in the red cells.

Acquired forms

Hypochromic anemia may be caused by iron deficiency from a low iron intake, diminished iron absorption, or excessive iron loss. It can also be caused by infections or other diseases, therapeutic drugs such as Meropenem, and lead poisoning. One acquired form of anemia is also known as Faber's syndrome. It may also occur from severe stomach or intestinal bleeding caused by ulcers or medications such as aspirin.^[1]

Hereditary forms

It can also occur in certain forms of congenital developmental disorders, like Benjamin syndrome.

Differentiating Hypochromic Anemia from Other Diseases

To review the differential diagnosis of anemia, click here.

Disease	Genetics	Clinical manifestation					Lab findings
		History	Symptoms	Signs	Hemolysis	Intrinsic/Extrinsic	Hb concentration	MCV	RDW	Reticulocytosis	Haptoglobin levels	Hepcidin	Iron studies					Specific finding on blood smear
		History	Symptoms	Signs	Hemolysis	Intrinsic/Extrinsic	Hb concentration	MCV	RDW	Reticulocytosis	Haptoglobin levels	Hepcidin	Serum iron	Serum Tfr level	Transferrin or TIBC	Ferritin	Transferrin saturation	Specific finding on blood smear
Iron deficiency anemia^[2]	−	Menorrhagia GI loss GI surgery Pregnancy	Koilonychia Pica	Glossitis Cheilosis Dysphagia	−	−	Hypochromic	Microcytic	↑	Nl or ↓	Nl	Nl	↓	↑	↑	↓	↓↓↓	Central pallor
Lead poisoning^[3]	−	House painted with chipped paint	Burtonian lines Basophilic stippling Wrist drop Foot drop	Wrist drop Foot drop Burtonian lines	−	−	Hypochromic	Microcytic	Nl	Nl or ↓	Nl	Nl	Nl to ↓	Nl	Nl	Nl to ↓	−	RBCs retain aggregates of rRNA Basophilic stippling
Sideroblastic anemia^[4]	Defect in ALA synthase gene Autosomal dominant Autosomal recessive X-linked	Alcohol abuse Isoniazid use Chloramphenicol use Idiopathic	Seborrheic dermatitis Glossy Tongue Tingling	Patient present with symptoms of Vitamin B6, copper deficiency symptoms	−	−	Hypochromic	Microcytic	Nl	Nl or ↓	Nl	Nl	↑	Nl	Nl to ↓	↑	−	Ringed sideroblasts
Anemia of chronic disease^[5]	−	Rheumatoid arthritis SLE Neoplasm Chronic kidney disease	Headache Shortness of breath	−	−	−	Hypochromic	Microcytic	Nl	Nl or ↓	Nl	↑	↓	Nl	↓	↑	−	NA
Thalassemia^[6]	α-thalassemia α- globin gene deletions Cis deletions Trans deletions β-thalassemia Point mutation in splice sites and promoter sequences	Associated with parvovirus B19	α-thalassemia Hydrops fetalis β-thalassemia Skeletal deformities Chipmunk facies	Hepatomegaly Splenomegaly	−	−	Hypochromic	Microcytic	Nl	Thalassemia trait: Nl or ↓ Thalassemia Syndromes: ↑	Nl	Nl	Nl to ↑	Nl	Nl	↑	Nl to ↑	Target cells Anisopoikilocytosis
Disease	Genetics	History	Symptoms	Signs	Hemolysis	Intrinsic/Extrinsic	Hb concentration	MCV	RDW	Reticulocytosis	Haptoglobin levels	Hepcidin	Serum iron	Serum Tfr level	IBC	Ferritin	Transferrin saturation	Specific finding on blood smear

References

↑ Miale JB (1982). Laboratory Medicine: Hematology. (6th ed.) The CV Mosby Company, St. Louis ISBN 1-125-44734-6
↑ Camaschella C (May 2015). "Iron-deficiency anemia". N. Engl. J. Med. 372 (19): 1832–43. doi:10.1056/NEJMra1401038. PMID 25946282.
↑ Bain BJ (December 2014). "Lead poisoning". Am. J. Hematol. 89 (12): 1141. doi:10.1002/ajh.23852. PMID 25220013.
↑ Bottomley SS, Fleming MD (August 2014). "Sideroblastic anemia: diagnosis and management". Hematol. Oncol. Clin. North Am. 28 (4): 653–70, v. doi:10.1016/j.hoc.2014.04.008. PMID 25064706.
↑ Roy CN (2010). "Anemia of inflammation". Hematology Am Soc Hematol Educ Program. 2010: 276–80. doi:10.1182/asheducation-2010.1.276. PMID 21239806.
↑ Zainal NZ, Alauddin H, Ahmad S, Hussin NH (December 2014). "α-Thalassemia with Haemoglobin Adana mutation: prenatal diagnosis". Malays J Pathol. 36 (3): 207–11. PMID 25500521.

[1] Miale JB (1982). Laboratory Medicine: Hematology. (6th ed.) The CV Mosby Company, St. Louis ISBN 1-125-44734-6

[pmid25946282-2] Camaschella C (May 2015). "Iron-deficiency anemia". N. Engl. J. Med. 372 (19): 1832–43. doi:10.1056/NEJMra1401038. PMID 25946282.

[pmid25220013-3] Bain BJ (December 2014). "Lead poisoning". Am. J. Hematol. 89 (12): 1141. doi:10.1002/ajh.23852. PMID 25220013.

[pmid25064706-4] Bottomley SS, Fleming MD (August 2014). "Sideroblastic anemia: diagnosis and management". Hematol. Oncol. Clin. North Am. 28 (4): 653–70, v. doi:10.1016/j.hoc.2014.04.008. PMID 25064706.

[pmid21239806-5] Roy CN (2010). "Anemia of inflammation". Hematology Am Soc Hematol Educ Program. 2010: 276–80. doi:10.1182/asheducation-2010.1.276. PMID 21239806.

[pmid25500521-6] Zainal NZ, Alauddin H, Ahmad S, Hussin NH (December 2014). "α-Thalassemia with Haemoglobin Adana mutation: prenatal diagnosis". Malays J Pathol. 36 (3): 207–11. PMID 25500521.

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