When Autoimmunity Meets Malignancy: A Rare Case of Concomitant Systemic Lupus and Multiple Myeloma. - Ratsimbazafy, Solohery Jean Noël; Andrianarisambatra, Havantsoa Nomena Fandresena; Radinasoa, Rajo Païdia; Razafindrazaka, Hitsy Andraina; Randriamampianina, Tahianasoa; Miandrisoa, Rija Mikhaël; Ralison, Fidiarivony; Vololontiana, Hanta Marie Danielle (Clinical Case Reports, 2026)