Patterns of diagnostic error in trauma abdominal CT

Area of Science:

• Radiology
• Medical Imaging
• Diagnostic Accuracy

Background:

• Interpreting abdominal CT scans in trauma patients is critical for timely diagnosis and management.
• Diagnostic errors can significantly impact patient outcomes.

Purpose of the Study:

• To identify and define recurring patterns of diagnostic errors in the interpretation of abdominal CT scans for trauma evaluation.

Main Methods:

• A review of 254 trauma abdominal CT scans with definite or equivocal injury diagnoses.
• Expert panel re-reading of 44 identified potential diagnostic errors to evaluate and categorize them.
• Analysis of errors to identify common patterns in false-positive and false-negative interpretations.

Main Results:

• 12% (31/254) of reviewed CT scans contained non-trivial diagnostic errors.
• Errors included both false negatives (17) and false positives (14), affecting organs like the liver, spleen, and kidneys.
• Identified patterns of false-negative errors: missed contrast extravasation, hemoperitoneum, and retroperitoneal hematoma.
• Identified patterns of false-positive errors: misinterpreting edema/blood tracking as lacerations, respiratory motion as injury, and lucencies as lacerations.

Conclusions:

• Diagnostic errors in trauma abdominal CT interpretation are not random but cluster into specific, recurring patterns.
• Awareness of these identified patterns can help radiologists avoid future diagnostic mistakes and improve accuracy.