1. Department of Dermatology AP‐HPHôpital Henri Mondor Créteil France
2. Department of Dermatology Bordeaux University Hospital Bordeaux France
3. Cutaneous Lymphoma Oncogenesis Team INSERM U1053 Bordeaux Research in Translational Oncology (BaRITOn) Bordeaux University Bordeaux France
4. French Cutaneous Lymphomas Study Group Paris France
5. Department of Dermatology AP‐HPHôpital Saint‐LouisUniversité de Paris Paris France
6. Department ofPathology Bordeaux University Hospital Bordeaux France
7. Department ofPathology AP‐HP Hôpital Saint‐Louis Université de Paris Paris France
8. Department of Dermatology University Hospital of Lyon‐Sud Lyon France
9. Department ofPathology University Hospital of Lyon‐Sud Lyon France
10. Department of Dermatology Hôpital de la Croix Rousse Hospices Civils de Lyon, Lyon France
11. Department of Dermatology CHU Angers Angers France
12. Department of Dermatology Hôpitaux de Marseille Marseille France
13. Department of Dermatology AP‐HP Hôpital Beaujon Clichy France
14. Department of Dermatology Centre Hospitalier de Valence Valence France
15. Dermatology Private Clinics Lunéville France
16. Department of Dermatology CHU de Montpellier Montpellier France
17. Department of Dermatology AP‐HP Hôpital Bichat Paris France
18. Department of Pathology AP‐HP Hôpital Henri Mondor Créteil France
19. Paris Est Creteil University (UPEC) and IMRB INSERM U955 Team Ortonne (NFL) Créteil France