Early-Onset Direct Antiglobulin Test-Negative Autoimmune Hemolytic Anemia Induced by Pembrolizumab in Perioperative Triple-Negative Breast Cancer: A Case Report. - Fujii, Ryohei; Shibata, Nobuhiro; Kikawa, Yuichiro; Fujita, Shinya; Noda, Yuri; Kasahara, Mikiko; Hirai, Chie; Tada, Manami; Yanai, Hirotsugu; Sugie, Tomoharu; Takada, Masahiro (Case Reports in Oncology, 2026)