Retroperitoneal Hematoma Secondary to Isolated Mesenteric Injury Following Bicycle Handle Bar Impact: A Case Report.

Bicycle handlebar injury is a common mechanism of causing intra-abdominal trauma, especially in children. However, cases of retroperitoneal hematoma due to this mode of injury are quite uncommon and hence, are rarely reported. We hereby present a case involving a 12-year-old boy who underwent an emergency exploratory laparotomy following a bicycle handlebar injury, which uncovered a significant retroperitoneal hematoma resulting from mesenteric and vascular injury. Clinical findings of hemodynamic instability, along with appropriate imaging studies and prompt interventions, facilitated the diagnosis and necessary management. This case report, highlighting an unusual occurrence that could lead to increased morbidity and mortality if not managed promptly, underscores the potential for retroperitoneal hematoma resulting from bicycle handlebar injuries.