Pembrolizumab-Associated Polyserositis with Eosinophilic Pleural Effusion During Adjuvant Therapy for Clear Cell Renal Cell Carcinoma: A Case Report and Targeted Review. - Portu, Mikel; Sanz-Beltran, Judit; Duarte Borges, María Alejandra; Navarro, Julieta; Arias, Alexandra; Alvarez, Paula; Fernández-Rebollo, Angel; Reyes, Carlos; Flores, Juan; Anguera, Georgia; Maroto, Pablo (Current Oncology, 2026)