Accuracy of Clinical Skin Tumour Diagnosis in a Dermatological Setting
DOI:
https://doi.org/10.2340/00015555-1560Keywords:
skin cancer, skin cancer diagnosis, basal cell carcinoma, squamous cell carcinoma, malignant melanoma, skin surgery.Abstract
The aim of this study was to evaluate the accuracy of preoperative diagnosis of skin tumours in a dermatological setting. Patients undergoing skin surgery at the Department of Dermatology without preoperative biopsy were prospectively enrolled. Preoperatively, a single clinical diagnosis was registered. The histopathological diagnosis, performed after excision, was registered as the correct diagnosis. The sensitivity and positive predictive value of the clinical diagnosis were calculated. A total of 2,953 tumours were included. Altogether, 55.1% of the excised lesions were malignant. Excision margins for malignant tumours were free from tumour cells in 96.0% of cases. The sensitivity for diagnosis of malignant tumour was 98.0% and the positive predictive value was 85.3%. In line with previous studies, the sensitivity and positive predictive value were highest for basal cell carcinoma, 95.4% and 85.9%, respectively. For squamous cell carcinoma, the corresponding values were 68.0% and 67.3%, and for melanoma, 70.6% and 51.3%.Downloads
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Copyright (c) 2013 Ingela Ahnlide, Mats Bjellerup
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