Hemothorax Complicating Hickman Line Placement in a Pediatric Patient: A Case Report of Early Recognition and Management.

Central venous catheters (CVCs) are essential in managing pediatric patients requiring long-term venous access, particularly for bone marrow transplantation (BMT). Although generally safe, their insertion is not without risks. We report the case of a one-year-old boy with Severe Combined Immunodeficiency Disorder (SCID) who developed a life-threatening right-sided hemothorax during Hickman line placement. The patient presented with acute hemodynamic instability and pulseless electrical activity (PEA) following multiple failed cannulation attempts. Immediate resuscitation measures restored circulation, and imaging revealed a large hemothorax. A chest tube was inserted, draining 138 mL of blood, leading to clinical stabilization. This case highlights the importance of early complication recognition, imaging, and prompt intervention during central venous catheterization.