Post-radiotherapy recurrence of conventional oral squamous cell carcinoma showing sarcomatoid components: an immunohistochemical study - Ferrisse, Túlio Morandin; Rocha, Audrey Foster Lefort; Lança, Maria Letícia de Almeida; Silveira, Heitor Albergoni da; Almeida, Luciana Yamamoto; Bufalino, Andreia; León, Jorge Esquiche (Autopsy Case Reports, 2021)