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The role of radiologic evaluation in necrotizing soft tissue infections.
Journal of Trauma and Acute Care Surgery 2016 November
BACKGROUND: The role of diagnostic imaging in suspected necrotizing soft tissue infections (NSTIs) is not clear owing to concerns about its value and possible delays in definitive surgical care.
METHODS: Plain radiograph (XR) and computed tomography (CT) results of all patients who underwent operative debridement for a presumed NSTI from 2007 through 2014 at LAC + USC Medical Center were reviewed. Preoperative imaging was classified as being negative, suspicious (inflammatory changes), or diagnostic (soft tissue gas) for NSTI.
RESULTS: Of 226 patients undergoing operative exploration for a suspected NSTI, 172 (76.1%) were found to have a true NSTI based on intraoperative or pathology findings. In patients with true NSTI, preoperative XR and CT demonstrated soft tissue gas in 47.9% and 70.3% of cases, respectively. CT diagnosed or highly suspected NSTI in 97.3% of cases with true NSTI compared to 83.6% with XR; p < 0.001).
CONCLUSION: CT was superior to XR in the radiologic evaluation of patients with suspected NSTIs.
LEVEL OF EVIDENCE: Diagnostic test, level IV.
METHODS: Plain radiograph (XR) and computed tomography (CT) results of all patients who underwent operative debridement for a presumed NSTI from 2007 through 2014 at LAC + USC Medical Center were reviewed. Preoperative imaging was classified as being negative, suspicious (inflammatory changes), or diagnostic (soft tissue gas) for NSTI.
RESULTS: Of 226 patients undergoing operative exploration for a suspected NSTI, 172 (76.1%) were found to have a true NSTI based on intraoperative or pathology findings. In patients with true NSTI, preoperative XR and CT demonstrated soft tissue gas in 47.9% and 70.3% of cases, respectively. CT diagnosed or highly suspected NSTI in 97.3% of cases with true NSTI compared to 83.6% with XR; p < 0.001).
CONCLUSION: CT was superior to XR in the radiologic evaluation of patients with suspected NSTIs.
LEVEL OF EVIDENCE: Diagnostic test, level IV.
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