The Sanctuary Within: Development of CD20+ CNS Lymphoma Despite Peripheral B‐Cell Depletion by Rituximab in a Multiple Sclerosis Patient. - Harirchian, Mohammad Hossein; Mohammadianinejad, Seyed Ehsan; Bayati, Asghar; Soleimani, Vahid; Sarvestani, Zahra; Kaeedi, Maryam; Havadaragh, Sanaz Heydari; Simone, Isabella Laura (Case Reports in Neurological Medicine, 2026)