A rare posterior mediastinal follicular lymphoma presenting with persistent flank pain: diagnostic challenges and multimodal imaging insights. - Leivaditis, Vasileios; Liolis, Elias; Özsoy, Ece; Bregianni, Sofia; Karagkouni, Eleni; Papatriantafyllou, Athanasios; Grapatsas, Konstantinos; Büki, Tamas; Mulita, Francesk; Antzoulas, Andreas; Litsas, Dimitrios; Papadopoulos, Panagiotis Dimitrios; et al. (Polish Journal of Thoracic & Cardiovascular Surgery / Kardiochirurgia i Torakochirurgia Polska, 2025)