A prospective comparison of spectrophotometric intracutaneous analysis to clinical judgment in the diagnosis of nonmelanoma skin cancer
2007
Introduction: Research indicates that spectrophotometric intracutaneous analysis (SIAscopy) may be a useful adjunct in nonmelanoma skin cancer (NMSC) diagnosis. A study was performed to prospectively assess the accuracy of NMSC diagnosis by the SIAscope as compared with a clinician. Methods: Prior to excision, 323 consecutive lesions were examined and diagnosed by a clinician. SIAgraphs were then taken of the lesions and examined blindly at a later date. Diagnostic accuracy for the clinician and SIAscope was compared between the clinician and SIAscope and to histology. Results: Sensitivity, specificity, positive and negative predictive values for clinical diagnoses were 95.6%, 75.8%, 0.79, and 0.95, respectively. Results for SIA diagnoses were 97.5%, 86.7%, 0.88, and 0.97. Statistical comparison revealed comparable sensitivities for the 2 groups but significantly better specificity for the SIAscope at the 95% confidence level. Conclusion: This study indicates that the SIAscope may be useful in NMSC diagnosis, with accuracies comparable to a clinician.
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