1. Lentigo maligna melanoma mapping using reflectance confocal microscopy correlates with staged excision: A prospective study
- Author
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Stephen W. Dusza, Miguel Cordova, Melissa Pulitzer, Kivanc Kose, Travis Hollman, Cristian Navarrete-Dechent, Kishwer S. Nehal, Klaus J. Busam, Erica H. Lee, Konstantinos Liopyris, Saud Aleissa, Chih-Shan J. Chen, Cecilia Lezcano, and Anthony M. Rossi
- Subjects
Surgical margin ,medicine.medical_specialty ,medicine.diagnostic_test ,business.industry ,medicine.medical_treatment ,Dermatology ,Lentigo maligna ,Gold standard (test) ,medicine.disease ,030207 dermatology & venereal diseases ,03 medical and health sciences ,0302 clinical medicine ,030220 oncology & carcinogenesis ,Biopsy ,Mohs surgery ,Medicine ,Histopathology ,business ,Lentigo maligna melanoma ,Nuclear medicine ,Prospective cohort study - Abstract
Background Lentigo maligna/lentigo maligna melanoma (LM/LMM) can present with subclinical extension that may be difficult to define preoperatively and lead to incomplete excision and potential recurrence. Preliminarily studies have used reflectance confocal microscopy (RCM) to assess LM/LMM margins. Objective To evaluate the correlation of LM/LMM subclinical extension defined by RCM compared to the gold standard histopathology. Methods Prospective study of LM/LMM patients referred for dermatologic surgery. RCM was performed at the clinically-defined initial surgical margin followed by margin-controlled staged excision with paraffin-embedded tissue and histopathology was correlated with RCM results. Results Seventy-two patients were included. Mean age was 66.8 years (SD 11.1; 38 – 89 years); 69.4% were males. 70/72 (97.2%) lesions were located on the head neck with mean largest clinical diameter of 1.3cm (0.3 – 5 cm). Diagnostic accuracy for detection of residual melanoma in the tumor debulk (after biopsy) had a sensitivity of 96.7% and a specificity of 66.7% when compared to the histopathology. RCM margin assessment revealed an overall agreement with final histopathology of 85.9% (kappa 0.71; p Limitations No RCM imaging beyond initial planned margins was performed. Conclusion RCM showed moderate to excellent overall agreement between RCM imaging of LM/LMM and histopathology of staged excision margins.
- Published
- 2023