This issue of Dermatologic Clinics, guest edited by Jane M. Grant-Kels, Giovanni Pellacani, and Caterina Longo, is devoted to Confocal Microscopy. Articles in this timely issue include: Basics of Confocal Microscopy and the Complexity of Diagnosing Skin Tumors: New Imaging Tools in Clinical Practice, Diagnostic Workflows, Cost-estimate and New Trends; Opening a Window Into Living Tissue: Histopathologic Features of Confocal Microscopic Findings in Skin Tumors; Addressing the Issue of Discriminating Nevi from Early Melanomas: Dues and Pitfalls; Melanoma Types and Melanoma Progression: The...