Exceptional Response to a Single Dose of Pembrolizumab as Salvage Therapy for Metastatic Adrenocortical Carcinoma. - Branchaud-Croisetière, Laurie; Turcotte, Emma; Castilloux, Jean-François; Bourdeau, Isabelle; Mercier, Frédéric; St-Jean, Matthieu (JCEM Case Reports, 2026)