Dr. Klaus Busam is a Professor of Pathology at Memorial Sloan Kettering Cancer Center and the Director of the combined Memorial Sloan Kettering/Cornell Dermatopathology Training Program. His training is from the Brigham & Women's Hospital and Harvard Medical School combined program. His interests include the utilization of clinical, histological and molecular diagnostic methods to optimize diagnostic accuracy and best predict the behavior of melanocytic neoplasms. As a dermatopathologist, he is recognized as an international expert in the diagnosis of melanoma and is sent many second opinion cases both from within and outside of the United States. As a researcher he is focused on developing molecular based methods to improve the diagnosis and prognostication of melanocytic neoplasms. He has authored over 250 peer reviewed journal articles and numerous textbooks in dermatopathology. Dr Pedram Gerami: Selected to Best Doctors in America 2019-2020, Dr Gerami is the director of the Skin Cancer Institute of Northwestern Medical Group (SCIN-Med) and the director of the Melanoma Program in the Skin Cancer Institute and the Melanoma clinic in the department of Dermatology. His clinical and research interests are primarily focused on melanoma skin cancer, atypical nevi and borderline melanocytic tumors such as Spitz tumors which may be difficult to classify. As a dermatologist, dermatopathologist and researcher focused in the care of patients with melanoma and atypical nevi, he has a unique perspective on the behavior of melanocytic neoplasms.

• Section 1 Non-Neoplastic Disorders1. Inflammatory Diseases of the Dermis and Epidermis2. Panniculitis3. Infectious Diseases of the Skin4. Cutaneous Vasculitis5. Blistering Skin Diseases6. Mucinoses, Deposition Disorders, and Connective Tissue Alterations7. Nonneoplastic Disorders of Pigmentation8. Alopecia9. Cysts and Sinuses10. Pediatric DermatopathologySection 2 Tumors of the Skin and Subcutis11. Tumors of the Epidermis12. Adnexal Tumors13. Melanocytic Neoplasms14. Soft Tissue Tumors15. Hematopoietic Neoplasms16. Histiocytoses17. Cutaneous Neuroendocrine (Merkel Cell) Carcinoma18. Metastatic Tumors Involving the SkinSection 3 Pathology of Special Sites19. Neoplastic and Nonneoplastic Disorders of the Nail Apparatus20. Neoplastic and Nonneoplastic Disorders of the Conjunctiva and Eyelid

5 Stars! "...a valuable resource for residents, fellows, and experienced dermatopathologists as it provides a compact overview of most skin diseases including inflammatory and neoplastic conditions. It illustrates them in a catchy, compact way with their most important differential diagnoses.... Each disease entity is described with a short text, summarized in a table containing a disease fact list, a table with the main histopathological hallmarks, and illustrated by a small or medium-sized clinical and/or histopathological color photo.... A highlight of the book is algorithmic approaches to certain diagnoses like alopecia that are known to cause problems in decision making during daily sign out.... Its compact size and practical tables and charts make it very easy to use,... a great resource for trainees in dermatopathology and experienced dermatopathologists alike." Review by Katharina Wiedemeyer, MD (University of Michigan Medical School), ©Doody's Review Service, 2025. Doody's Score: 99, 5 Stars!Review of the previous edition: "I liked the layout of this textbook and it provided an excellent synopsis of the diseases that were included. The book is also accessible online...It is a textbook that should be available in all training departments for both dermatologists and histopathologist." -Reviewed by The Bulletin, October 2010"Busam and a group of experienced diagnostic dermatopathologists hit that mark precisely with this text...Books offering an introduction to the field and those aiming to cover the "essentials" also abound. What sets this volume apart, however, is the emphasis on differential diagnosis, logical organization, and liberal use of summary tables. Very few books are as practical for a busy practicing pathologist or resident as this volume." -Reviewed by Barbara M. Egbert, MD, Doody's Review Service