General practice registrars' use of dermoscopy: 'Prevalence, associations and influence on diagnosis and confidence'

Background and objective: Dermoscopy increases accuracy for melanoma diagnosis by trained primary care physicians. We aimed to establish prevalence of dermatoscope use by general practice registrars, and identify factors associated with dermatoscope use and the implications of dermatoscope use for diagnosis and confidence in diagnosis. Methods: This was a cross-sectional study nested within the Registrar Clinical Encounters in Training (ReCEnT) project, an ongoing multi-site cohort study of general practice registrars' consultations. The study was conducted during two six-monthly rounds of ReCEnT data collection in four regional training providers in 2014. Results: Forty-nine per cent of registrars reported having dermoscopy training. Dermoscopy was used in 61% of consultations involving skin or pigmented lesion checks. Dermatoscope use changed provisional diagnosis in 22% of instances and increased diagnostic confidence in 55%. Discussion: Dermoscopy is performed by general practice registrars in a modest proportion of skin and pigmented lesion checks. Its use influences registrars' diagnoses and increases their confidence in their diagnoses.