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Emergency and Acute Medicine – Pancreatic Trauma
Pancreatic trauma most commonly results from a direct epigastric blow that compresses the pancreas against the vertebral column in blunt trauma or from penetrating injury by a sharp object. Because of the retroperitoneal location of the pancreas, significant force is usually required to cause injury. In children, pancreatic trauma often reflects proportionately greater force to a smaller body mass, leading to multisystem injuries, and clinicians must consider nonaccidental trauma, malpositioned seat belts, and child abuse. Pediatric patients may present without hypotension despite serious injury.
Penetrating trauma is the most common mechanism overall, while blunt trauma typically involves steering wheels, seat belts, or bicycle handlebars impacting the upper abdomen. Pancreatic injury is rarely isolated, with approximately 90% of cases associated with injuries to adjacent structures including the liver, stomach, spleen, kidneys, duodenum, colon, small bowel, common bile duct, gallbladder, major vascular structures, and the spine, particularly Chance fractures.
Clinical presentation is often subtle and nonspecific, and the extent of pancreatic injury may not be apparent on initial evaluation. Patients typically report diffuse or epigastric abdominal pain that may be out of proportion to physical findings and vital signs. Associated findings include upper abdominal soft-tissue contusions, lower rib or costal cartilage injuries, hypotension, and signs of retroperitoneal hemorrhage such as Grey Turner or Cullen signs. Vascular injury is the leading cause of mortality and mandates immediate evaluation and surgical consideration when suspected.
Physical examination should be thorough and repeated serially, with inspection for abrasions, contusions, and penetrating wounds, including a complete log roll. Clinicians should assess bowel sounds, abdominal tenderness, guarding, rebound, and evaluate for occult bleeding with rectal or genital examinations as appropriate. Serial vital signs and examinations are essential, as early findings may be minimal despite significant injury.
Diagnostic evaluation is dictated by patient stability and associated injuries. Contrast-enhanced abdominal CT is the cornerstone of evaluation for pancreatic trauma, although imaging may still miss injuries, particularly ductal disruptions. MRCP is increasingly used in trauma centers to better assess pancreatic duct involvement. Laboratory testing includes hematocrit, complete metabolic profile, coagulation studies, and type and screen. Serum amylase and lipase are unreliable for ruling out pancreatic injury; normal levels do not exclude injury, while elevations are nonspecific but may raise suspicion. FAST ultrasound may identify associated injuries but is insensitive for pancreatic damage.
Initial management follows standard trauma principles with airway protection, hemodynamic resuscitation using crystalloids or blood products, and early surgical consultation. Nasogastric decompression may be beneficial. Broad-spectrum antibiotics are indicated for penetrating injuries or when operative intervention is required, with coverage for both aerobic and anaerobic enteric organisms. Early identification of ductal injury significantly reduces morbidity and mortality.
Definitive management depends on injury grade and patient stability. Minor pancreatic injuries are often managed with drainage, while higher-grade injuries involving ductal disruption may require resection and drainage, pancreaticoduodenectomy, or selective endoscopic interventions. There is insufficient evidence to support routine use of octreotide. All patients with suspected pancreatic injury require hospital admission, observation, and serial examinations, with unstable patients proceeding directly to operative exploration.
Complications may present in a delayed fashion and include pancreatitis, pseudocyst formation, fistulas, and vascular aneurysms. Long-term endocrine or exocrine dysfunction is uncommon unless extensive pancreatic tissue is destroyed or resected. A high index of suspicion, careful imaging selection, and early surgical involvement are essential to optimize outcomes in pancreatic trauma.
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