Kovalyov, O.; Zavhorodniy, S.; Tolok, O.; Anenko, A.; Kubrak, M.; Danilyuk, M.; Kovalyov, K. PHENOTYPIC SHIFT OF ADENOCARCINOMA TO SQUAMOUS CELL CARCINOMA OF RECTUM AFTER NEOADJUVANT CHEMORADIOTHERAPY WITH DETECTION OF HPV16: A CLINICAL CASE. Exp. oncol. 2026, 48, 172-180.