Delayed spontaneous remission in a child with primary acquired chronic pure red cell aplasia.
The acquired form of pure red cell aplasia (PRCA) presents either as an acute self-limited disease, predominantly seen in children, or as a chronic illness more frequently seen in adults with rare spontaneous remissions. A 14-year-old boy presented with pallor, without hepatosplenomegaly, jaundice, lymphadenopathy, petechiae, or any other apparent abnormalities. Isolated anemia in the presence of normal white cell and platelet counts with a marrow of normal cellularity and absence of erythroblasts but normal myeloid cells and megakaryocytes revealed the diagnosis of PRCA. All possible investigations excluded secondary causes of PRCA. The patient required packed red cell transfusions every 2 to 3 weeks. He failed therapy with intravenous immunoglobulin, corticosteroids, cyclosporine A plus corticosteroids, antithymocyte globulin, anti-CD 20 (rituximab), and erythropoietin (EPO). He showed a severe, resistant, and transfusion-dependent PRCA. Spontaneous remission with normal hemoglobin and reticulocyte levels was dramatic 6.5 years after the diagnosis of PRCA and 3.6 years after his last treatment.
Khalil
Abdalla
A
Department of Pediatric Hematology Oncology, Meyer Children's Hospital, Rambam Health Care Campus, Haifa, Israel. k_abdalla@rambam.health.gov.il
Elhasid
Ronit
R
Ben Barak
Ayelet
A
Ben Arush
Myriam Weyl
MW
D000293:Adolescent; D002908:Chronic Disease; D006801:Humans; D008297:Male; D012010:Red-Cell Aplasia, Pure / Q000175:diagnosis / Q000628:therapy*; D012074:Remission Induction