Microspherocytosis

[MIM 182 900270 970612 653612 690616 649 ]

(Minkowski-Chauffard disease, spherocytosis)

Prevalence in Europe estimated at 1/2,000 to 1/5,000. Constitutional anomaly of the red bllod cells membranes proteins that produces an increased fragility.

Variable transmission mode:

-         mutation of the ANK1 gene that codes for ankyrine (50% in USA): autosomal dominant or recessive transmission, or de novo mutation

-         mutation of the EPB42 gene that codes for protein 4.2 (50% in Japan): autosomal recessive transmission

-        mutation of the SPTB gene that codes for ß spectrin: autosomal dominant transmission or de novo mutation

-         mutation of the SPTA1 gene, that codes α-spectrin: autosomal recessive transmission

-         mutation of the SLC4A1 gene that codes the band 3 protein: autosomal dominant transmission


Clinical manifestations:

1)  sudden crises of deglobulisation: in general in the course of a viral infection: sudden worsening of anemia and jaundice.

2) aplastic crises: following infection by parvovirus B19

3) as a consequence of chronic hemolysis, cholelithiasis in childhood.

Diagnosis: spherocytosis at microscopic examination of the red cells; high reticulocytosis, decrease in the resistance of red cells in a hypotonic solution.

Total or subtotal splenectomy is indicated in case of significant anemia and frequent transfusions.


Anesthetic implications: 

check the hemoglobin and the bilirubin level; before splenectomy antipneumococcal vaccination; prophylactic antibiotics. Thromboprophylaxis (aspirin) in the days following splenectomy.


References : 


Updated: February 2017