Description

A patient with beta-thalassemia may be asymptomatic or not, depending on what genes have been inherited. The severity of the anemia correlates with complications.


 

Parameters:

(1) severity of anemia

(2) mean cell volume (MCV)

(3) splenomegaly

(4) bone lesions

(5) transfusion requirements

(6) iron overload

(7) symptoms

Parameter

Thalassemia Trait

Thalassemia Intermedia

anemia

none to mild

mild to moderate

MCV

variable, may be normal

microcytosis

splenomegaly

absent

present

bone lesions

absent

may be present or absent

transfusion requirements

none

does not require regular transfusion

iron overload

none

may be present

symptoms

asymptomatic

asymptomatic to severely symptomatic

 

 

Parameter

Thalassemia Major

Hemoglobin E Thalassemia

anemia

severe, lifelong

mild to severe

MCV

microcytosis

 

splenomegaly

present

present

bone lesions

present, may be less severe if regularly transfused

present

transfusion requirements

significant and lifelong; requires regular transfusion

mild to significant

iron overload

severe

dependent on transfusion requirements

symptoms

severely symptomatic

asymptomatic to severely symptomatic

 

A person may be reclassified as thalassemia intermedia following splenectomy if regular transfusions are no longer required.

 


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