Immunological Significance of the ICI–PIT–ICI Sequence in Recurrent Oral Cancer: A Narrative Review with Illustrative Cases. - Suzuki, Taiki; Kumagai, Kenichi; Hasegawa, On; Okui, Taro; Aoki, Reo; Kato, Koichiro; Masuda, Chieko; Ohashi, Yoshihiro; Hamada, Yoshiki; Horie, Akihisa (Diagnostics (2075-4418), 2026)