BACKGROUND: It is unknown whether dermatoscopy improves the diagnostic accuracy for all types of @entity272 or only for those that are melanocytic. OBJECTIVE: We sought to assess if the addition of dermatoscopy to clinical examination with the unaided eye improves diagnostic accuracy for all types of @entity66 . METHODS: We analyzed 463 consecutively excised @entity272 collected during a period of 30 months in a primary care @entity1489 practice in Queensland, Australia. RESULTS: Of 463 lesions, 217 (46.9%) were nonmelanocytic. Overall 30% (n = 138) were malignant including 29 @entity320 , 72 @entity1491 , and 37 @entity957 . The diagnostic accuracy for @entity5 measured as area under receiver operating characteristic curves was 0.89 with dermatoscopy and 0.83 without it (P < .001). Given a fixed specificity of 80%, the corresponding sensitivity was 82.6% with dermatoscopy and 70.5% without it. The improvement achieved by dermatoscopy was higher for @entity75 than for melanocytic lesions. A short algorithm based on pattern analysis reached a sensitivity of 98.6% for @entity1491 , 86.5% for @entity957 , and 79.3% for @entity320 . Among benign conditions, the highest false-positive rate (90.5%) was observed for @entity9338 . LIMITATIONS: Estimates of diagnostic accuracy are influenced by verification bias. CONCLUSIONS: Dermatoscopy improves the diagnostic accuracy for @entity75 . A simple algorithm based on pattern analysis is suitable for the detection of @entity320 and @entity1489 .

Diagnostic accuracy of dermatoscopy for melanocytic and XXXX .

@entity66 :: ('MESH:D004194', 'Disease') :: ['pigmented lesions'] @entity5 :: ('MESH:D009369', 'Disease') :: ['malignant neoplasms'] @entity1489 :: ('MESH:D012878', 'Disease') :: ['nonmelanoma skin cancer', 'skin cancer'] @entity957 :: ('MESH:D002294', 'Disease') :: ['pigmented squamous cell carcinoma', 'squamous cell carcinomas'] @entity75 :: ('MESH:D001927', 'Disease') :: ['nonmelanocytic lesions'] @entity9338 :: ('MESH:D008010', 'Disease') :: ['lichen planus-like keratosis'] @entity272 :: ('MESH:D012871', 'Disease') :: ['pigmented skin lesions'] @entity320 :: ('MESH:D008545', 'Disease') :: ['melanoma', 'melanomas'] @entity1491 :: ('MESH:D002280', 'Disease') :: ['basal cell carcinomas', 'basal cell carcinoma']
@entity66 :: (MESH:D004194,Disease) :: ['nonmelanocytic pigmented lesions']
