Effect of transfusion therapy on cerebral vasculopathy in children with sickle-cell anemia.
This retrospective study assessed the long-term effect of transfusional exchange therapy on MRA/MRI abnormalities in 24 homozygous sickle-cell anemia (HbSS) children presenting with abnormal brain MRA. The median time elapsed from baseline to last available MRA was 29 months. Follow-up MRAs showed improvement, stabilization or worsening of cerebrovascular lesions in 11, 6 and 7 patients respectively. Complete normalization of MRA was observed in 6 patients within a mean time of 1.4 years, but stenosis recurred at the same location in the 4 patients in whom transfusion therapy was discontinued. Baseline severe stenosis/occlusion of large cerebral arteries and occurrence of moyamoya syndrome were significantly associated with an absence of improvement of the cerebral vasculopathy. These data emphasize the heterogeneity of the course of cerebrovasculopathy in SS children receiving chronic transfusion. Further studies are needed to determine whether different therapeutic approaches have to be considered according to these different evolutive patterns in SS children.
Bader-Meunier
Brigitte
B
Assistance Publique-Hôpitaux de Paris, Service d'Hématologie Pédiatrique, Hôpital Necker, Paris, France. brigitte.bader-meunier@nck.aphp.fr
Verlhac
Suzanne
S
Elmaleh-Bergès
Monique
M
Ithier
Ghislaine
G
Sellami
Fatiha
F
Faid
Sonia
S
Missud
Florence
F
Ducrocq
Rolande
R
Alberti
Corinne
C
Zaccaria
Isabelle
I
Baruchel
Andre
A
Benkerrou
Malika
M
D000293:Adolescent; D000755:Anemia, Sickle Cell / Q000150:complications* / Q000000981:diagnostic imaging / Q000628:therapy*; D001803:Blood Transfusion; D002561:Cerebrovascular Disorders / Q000150:complications* / Q000000981:diagnostic imaging / Q000628:therapy*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D011859:Radiography