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Interactive Case Study - September 2025



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Acknowledgements
Author Profiles

Laurence Feldmeyer, MD
Bern University Hospital
Prof. Feldmeyer is a board-certified Dermatologist and Dermatopathologist. She is the head of the Department of Dermatology in Lucerne, Switzerland. She earned her MD-PhD at the ETH Zurich and University of Lausanne and did her residency at the University Hospital of Zurich. She worked as a visiting scientist at the Department of Pathology at MD Anderson Cancer Center in Houston, Texas, as well as a senior physician/ professor at the Universities of Lausanne and Berne, SwitzerLand. She has over 100 peer-reviewed publications. In addition to her clinical work as a dermatologist and dermatopathologist, she is a board member of the Swiss Society of Dermatology and of the International Society of Dermatopathology.

Thierry Dubuis
Lausanne University Hospital
I am a medical student from French speaking Switzerland especially interested in dermatology. I aspire to become a dermatopathologist after the completion of my studies.
Delphine L. Perruchoud, MD
A board-certified dermatologist dedicated to the practice of dermatology and aesthetic medicine since 2010.
Question:
Long-lasting painful maculopapular lesions on the back of an 81-year-old otherwise healthy woman
Category
Tumors > Pilar/Sebaceous
Description