| Summary: | Peripheral apheresis has become a safe procedure to collect hematopoietic stem cells, even in pediatric patients and donors. However, the apheresis procedure for small and sick children is more complicated due to difficult venous access, relatively large extracorporeal volume, toxicity of citrate, and unstable hemostasis. We report a small and sick child with refractory medulloblastoma, impaired liver function, and coagulopathy after several major cycles of cisplatin-based chemotherapy. She successfully received large-volume leukapheresis for hematopoietic stem cell collection, although the patient experienced severe coagulopathy during the procedures. Health care providers should be alert to this potential risk.
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