Werner Kempf, MD, is professor of dermatology and scientific collaborator at the Dept. of Dermatology, University Hospital Zürich and co-director of the laboratory Kempf and Pfaltz Histological Diagnostics in Zürich, Switzerland. He received his MD from the University of Zürich. After residencies in surgical pathology and dermatology at the University Hospital Zürich and postdoctoral fellowships at the Beth Israel Deaconess Medical Center, Harvard Medical School, Boston MA, he joined the faculty at the Dept. of Dermatology, University Hospital in Zürich and served as head of Dermatopathology Unit. He co-founded the pathology laboratory Kempf und Pfaltz Histologische Diagnostik for dermatopathology and ENT pathology. His major interests are cutaneous lymphomas, virus-associated skin tumors, inflammatory skin disorders, and molecular diagnosis of infectious skin disorders. He is editorial board member of several dermatopathology journals and has been awarded the Prix International de Dermatopathologie Jean Civatte and the Robert-Fischer Award for cutaneous lymphomas.Markus Hantschke, MD, is co-Director of Dermatopathologie Friedrichshafen. He is a board certified dermatopathologist who trained at the Medical University of Lubeck and at the University of California. He has also been a postdoctoral fellow at the University of California.Heinz Kutzner, MD, retired, is a former co-director of Dermatopathologie Friedrichshafen, Friedrichshafen, Baden-Württemberg, Germany, and Visiting Professor at the University of Lisbon. Between 2011 and 2014 he was President of the International Society of Dermatopathology. He is editorial board member for the American Journal of Dermatopathology and has been awarded the Prix International de Dermatopathologie Jean Civatte.

• 1. Principles of diagnosis. 2. Basic Dermatopathological Terms.- 3. The skin biopsy.- 4. Histopathological techniques.- 5. Dermatopathologic glossary.- 6. Epidermis – Spongiosis, acanthosis and hyperparakeratosis.- 7. Epidermis – Acantholysis.- 8. Bullous diseases.- 9. Interface dermatoses.- 10. Dermis – Vascular disorders.- 11. Dermis – Granulomatous inflammation.- 12. Dermis – Interstitial inflammation.- 13. Dermis – Diffuse mixed inflammatory infiltrates.- 14. Dermis – Degenerative and metabolic disorders.- 15. Dermis – Inflammation of adnexal structures.- 16. Subcutaneous fat – Panniculitis.- 17. Drug reactions.- 18. Artifactual damage.- 19. Scleromyxedema / Lichen myxoedematosus.- 20. Cutaneous deposits and reactions to filler substances.- 21. Pseudocysts.- 22. Epithelial cysts.- 23. Epidermal hamartomas and neoplasms.- 24. Melanocytic lesions.- 25. Adnexal tumors.- 26. Soft tissue proliferations and neoplasms.- 27. Vascular Neoplasms.- 28. Vascular tumors.- 29. Lymphomas and pseudolymphomas.- 30. Histiocytoses and mastocytoses.- 31. Cutaneous metastases.