Management of Left Upper Quadrant Bruising

Initial Assessment and Risk Stratification

Hemodynamic status is the primary determinant of management pathway, with unstable patients requiring immediate surgical consultation regardless of imaging findings, as recommended by the World Journal of Emergency Surgery 1, 2
The presence of left upper quadrant ecchymosis should trigger a systematic evaluation protocol to detect potential intra-abdominal pathology, including splenic injury, left renal injury, pancreatic tail injury, or left-sided rib fractures 3
Associated findings that increase concern for significant intra-abdominal injury include lower left rib fractures, supra-umbilical seat belt signs, or upper lumbar spine fractures 3

For hemodynamically unstable patients, a bedside FAST examination should be performed immediately to detect free intraperitoneal fluid, evaluating four left upper quadrant spaces: pleural space, subphrenic space, splenorenal space, and left paracolic gutter 4, 5, 6
The FAST examination has a sensitivity of 79% and a negative predictive value of 93% in hypotensive patients, but a negative result does not exclude injury and should not preclude surgical exploration in unstable patients 4, 5
For hemodynamically stable patients, CT abdomen/pelvis with IV contrast is the definitive diagnostic test, with 97% sensitivity and 95% specificity for injuries requiring intervention, and is particularly useful for detecting pancreatic injuries 4, 5, 7

Non-operative management is preferred for grade III splenic injuries without contrast extravasation in hemodynamically stable patients, as recommended by the World Journal of Emergency Surgery 1, 2, 8
Previous left upper quadrant surgery does not contraindicate non-operative management, with 95% expert consensus 8, 9
Serum amylase and lipase should be measured in patients with suspected pancreatic injury, although normal levels within 3-6 hours do not exclude injury, and persistently elevated or rising levels have prognostic significance 3
CT with IV contrast may be essential for diagnosing pancreatic injuries, particularly pancreatic duct disruption 3, 10

The American College of Emergency Physicians recommends assessing hemodynamic stability immediately, and if unstable, performing a bedside FAST examination, followed by laparotomy if positive or if high clinical suspicion despite negative FAST 4, 10
For stable patients, CT abdomen/pelvis with IV contrast should be performed, and serial amylase/lipase levels should be monitored every 6 hours if pancreatic injury is suspected 3, 4
Non-operative management should be considered for isolated splenic injuries in stable patients, as recommended by the World Journal of Emergency Surgery 1, 2, 8