Clinical and dermoscopic characteristics of melanomas on nonfacial chronically sun-damaged skin.

Background: Melanomas on chronically sun-damaged skin (CSDS) can be difficult to identify and often manifest morphologic features that overlap with benign lesions.

Objective: We describe and analyze the clinical and dermoscopic characteristics of melanomas on nonfacial CSDS.

Methods: Melanoma cases on nonfacial CSDS were retrospectively identified from the biopsy specimen logs of 6 melanoma clinics.

The impact of subspecialization and dermatoscopy use on accuracy of melanoma diagnosis among primary care doctors in Australia.

Background: Dermatoscopy improves accuracy of melanoma diagnosis, but the impact of subspecialization in skin cancer practice among general practitioners on melanoma diagnostic accuracy is not known.

Objective: To assess the impact of dermatoscopy use and subspecialization on the accuracy of melanoma diagnosis by general practitioners.

Methods: We did a prospective study on the Skin Cancer Audit Research Database and measured melanoma 'number needed to treat' (NNT), with 21,900 lesions excised to diagnose 2367 melanomas.