This is a single-center retrospective cohort of SS patients diagnosed in a primary referral center for CTCL (Dermatologic Clinic, University of Turin, Turin) from October 1976 to May 2018 and prospectively followed up until May 2018.
Subjects were diagnosed and enrolled in accordance with the ISCL/EORTC (International Society for Cutaneous Lymphomas/European Organization of Research and Treatment of Cancer)