Severe mitral regurgitation due to cardiac sarcoidosis : An unusual clinical presentation ; a case report and review of the literature. - Polyzos, Dimitrios; Patavoukas, Georgios; Lykoudis, Anastasios; Mamaloukaki, Maria; Lampropoulos, Konstantinos (Annales de Cardiologie et d'Angéiologie, 2024)