Diagnostic errors among physician extenders are understudied, especially in subspecialty settings. In this study, physician assistants working in dermatology clinics performed more biopsies and diagnosed fewer skin cancers and melanoma than board-certified dermatologists. The authors were unable to assess how often either clinician type missed diagnoses of skin cancer.

… the more accurate fourth application, images are sent to a board-certified dermatologist for evaluation, rather than using a preset algorithm. The concern is that reliance on these …