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Clinico-pathologic conference: 18-month old boy with fever and severe respiratory infection
William F Pomputius1, Atilano Lacson, Herbert H Pomerance
1Department of Pediatrics, University of South Florida, College of Medicine, Tampa, Florida 33606, USA.
Insights
A bone marrow transplant for severe combined immunodeficiency (SCID) was initially successful but led to a fatal post-transplant lymphoproliferative disorder and respiratory infection in an infant.
Area of Science:
- Immunology
- Pediatric Hematology/Oncology
- Transplantation Medicine
Background:
- Severe combined immunodeficiency (SCID) is a group of rare genetic disorders impairing the immune system.
- Interleukin-2 receptor gamma chain (IL2-y) deficiency is a common cause of SCID.
- Allogeneic bone marrow transplantation is a curative treatment for SCID.
Observation:
- An 18-month-old boy with IL2-y receptor defect SCID underwent a related mismatched allogeneic bone marrow transplant.
- The transplant achieved successful engraftment, indicating donor cell acceptance.
- The patient later developed post-transplantation lymphoproliferative disorder (PTLD).
Findings:
- PTLD manifested with a severe respiratory infection.
- The severe respiratory infection, a complication of PTLD, proved fatal.
- The case highlights the complex interplay between transplantation, immune reconstitution, and lymphoproliferative complications.
Implications:
- This case underscores the critical need for vigilant monitoring for PTLD post-transplant in SCID patients.
- Understanding the pathology of PTLD is crucial for developing targeted therapeutic strategies.
- Further research into managing PTLD complications in immunocompromised pediatric patients is warranted.
Abstract:
An 18-month-old boy with severe combined immunodeficiency (SCID) due to an IL2-y-receptor defect had a successful engraftment following a related mismatched allogenic bone transplant. He subsequently developed post-transplantation lymphoproliferative disorder, with severe respiratory infection which resulted in death. The case presentation is followed by a discussion with differential diagnosis of the clinical findings, and then by a discussion of the pathology found and the implications of this diagnosis.