Couzan C, et al. - Among patients with multiple basal cell carcinomas (BCCs) treated by vismodegib, the authors assessed specificity and sensitivity of clinical, dermoscopic and reflectance confocal microscopy (RCM) examination for BCC. RCM was a non-invasive technique. During and after vismodegib treatment, it could detect subclinical residual BCC, thus helping the clinician to identify incomplete tumor regression.