ABSTRACT
Shwachman - Diamond syndrome (SDS)is a rare autosomal recessive disorder,SDS is characte-rized by exocrine pancreatic dysfunction,bone marrow failure,skeletal abnormalities and various other organ dysfunc-tions,and predisposition to MDS and acute myelogenous ceukemia. The Shwachman - Bodian - Diamond syndrome (SBDS)gene located on chromosome 7q11,the common mutation type is 183_184 TA > CT and 258 + 2 T > C. The purpose of this document is to comprehensive analysis the relevant literatures,analyze its clinical characteristics,geno-type,diagnosis and treatment suggestions to improve the clinician knowledge of the disease.
ABSTRACT
Entre las etiologías de anemias en la infancia, las citopatías mitocondriales son poco frecuentes. El síndrome de Pearson se diagnostica principalmente durante etapas iniciales de la vida y es caracterizado por anemia sideroblástica refractaria con vacuolización de células progenitoras en la médula ósea, disfunción del páncreas exocrino y variables alteraciones neurológicas, hepáticas, renales y endocrinas. En el siguiente informe reportamos un nuevo caso de lactante mayor femenino de 14 meses de edad, evaluada de forma multicéntrica con diagnostico clínico y molecular de síndrome de Pearson, con la deleción común de 4.977 pares de bases del ADN mitocondrial. Esta entidad ha sido asociada a diversos fenotipos dentro del amplio espectro clínico de las enfermedades mitocondriales.
Among the etiologies of anemia in the infancy, the mitochondrial cytopathies are infrequent. Pearson syndrome is diagnosed principally during the initial stages of life and it is characterized by refractory sideroblastic anemia with vacuolization of marrow progenitor cells, exocrine pancreatic dysfunction and variable neurologic, hepatic, renal and endocrine failures. We report the case of a 14 month-old girl evaluated by a multicentric study, with clinic and molecular diagnosis of Pearson syndrome, with the 4,977-base pair common deletion of mitochondrial DNA. This entity has been associated to diverse phenotypes within the broad clinical spectrum of mitochondrial disease.