Metachronous esophageal squamous cell carcinoma suspected as a second malignancy arising at the site of post-radiotherapy for esophageal adenocarcinoma. - Furusawa H; Hayashi T; Okamoto K; Miyazawa M; Seki A; Nakagawa H; Nio K; Iida N; Yamasita T; Yamashita T (Clinical journal of gastroenterology, 2025)