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==Overview==
==Overview==
'''Macrocytosis''' is the enlargement of [[red blood cell]]s with near-constant [[haemoglobin]] concentration, and is defined by a [[mean corpuscular volume]] (MCV) of greater than 100 femtolitres (the precise criterion varies between laboratories).
The symptoms of [[megaloblastic anemia]] typically develop many years after defieciency of [[Vitamin B12]]. If left untreated, patients with [[megaloblastic anemia]] may progress to develop [[Subacute combined degeneration of spinal cord]], [[Peripheral neuropathy]], and [[Dementia]].
 
==Natural History, Complications, and Prognosis==
 
===Natural History===
*The symptoms of [[megaloblastic anemia]] typically develop many years after defieciency of [[Vitamin B12]]. <ref name="pmid22254022">{{cite journal |vauthors=O'Leary F, Samman S |title=Vitamin B12 in health and disease |journal=Nutrients |volume=2 |issue=3 |pages=299–316 |date=March 2010 |pmid=22254022 |pmc=3257642 |doi=10.3390/nu2030299 |url=}}</ref>
*If left untreated, patients with megaloblastic anemia may progress to develop [[Subacute combined degeneration of spinal cord]], [[Peripheral neuropathy]], and [[Dementia]].
 
===Complications===
*Common complications of megaloblastic anemia include:<ref name="pmid16988104">{{cite journal |vauthors=Aslinia F, Mazza JJ, Yale SH |title=Megaloblastic anemia and other causes of macrocytosis |journal=Clin Med Res |volume=4 |issue=3 |pages=236–41 |date=September 2006 |pmid=16988104 |pmc=1570488 |doi= |url=}}</ref>
**
**[[Subacute combined degeneration of spinal cord]]
**[[Pyrexia of unknown origin]]<ref name="pmid27847889">{{cite journal |vauthors=Siddiqui B, Rabindranath D, Faridi SH, Khan AA, Haiyat S, Eswaran R |title=Megaloblastic anemia: A common but often neglected cause of pyrexia of unknown origin |journal=J Transl Int Med |volume=3 |issue=2 |pages=64–67 |date=2015 |pmid=27847889 |pmc=4936446 |doi=10.1515/jtim-2015-0005 |url=}}</ref>
**Damage to the [[nervous system]]
**Long-term [[neurologic]] complications.
**[[Peripheral neuropathy]]
**[[Dementia]].
 
===Prognosis===
*Prognosis is generally good with [[folate]] and [[vitamin B12]] supplemntation<ref name="pmid14616423">{{cite journal |vauthors=Sharabi A, Cohen E, Sulkes J, Garty M |title=Replacement therapy for vitamin B12 deficiency: comparison between the sublingual and oral route |journal=Br J Clin Pharmacol |volume=56 |issue=6 |pages=635–8 |date=December 2003 |pmid=14616423 |pmc=1884303 |doi= |url=}}</ref>
==References==
==References==
{{Reflist|2}}
{{Reflist|2}}
[[es:Anemia megaloblástica]]
[[gl:Anemia megaloblástica]]
[[he:אנמיה מגלובלסטית]]
[[it:Anemia megaloblastica]]
[[pl:Niedokrwistość megaloblastyczna]]
[[pt:Anemia megaloblástica]]
[[ru:Пернициозная анемия]]
[[sl:Megaloblastna anemija]]
[[sr:Мегалобластна анемија]]
[[tr:Megaloblastik anemi]]
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Latest revision as of 20:35, 6 November 2018

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Omer Kamal, M.D.[2]

Overview

The symptoms of megaloblastic anemia typically develop many years after defieciency of Vitamin B12. If left untreated, patients with megaloblastic anemia may progress to develop Subacute combined degeneration of spinal cord, Peripheral neuropathy, and Dementia.

Natural History, Complications, and Prognosis

Natural History

Complications

Prognosis

References

  1. O'Leary F, Samman S (March 2010). "Vitamin B12 in health and disease". Nutrients. 2 (3): 299–316. doi:10.3390/nu2030299. PMC 3257642. PMID 22254022.
  2. Aslinia F, Mazza JJ, Yale SH (September 2006). "Megaloblastic anemia and other causes of macrocytosis". Clin Med Res. 4 (3): 236–41. PMC 1570488. PMID 16988104.
  3. Siddiqui B, Rabindranath D, Faridi SH, Khan AA, Haiyat S, Eswaran R (2015). "Megaloblastic anemia: A common but often neglected cause of pyrexia of unknown origin". J Transl Int Med. 3 (2): 64–67. doi:10.1515/jtim-2015-0005. PMC 4936446. PMID 27847889.
  4. Sharabi A, Cohen E, Sulkes J, Garty M (December 2003). "Replacement therapy for vitamin B12 deficiency: comparison between the sublingual and oral route". Br J Clin Pharmacol. 56 (6): 635–8. PMC 1884303. PMID 14616423.

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