1. SEER Cancer Statistics Review, 1975-2017. Bethesda, MD: National Cancer Institute, 2020.
2. Comprehensive registry of esophageal cancer in Japan, 2009;Tachimori;Esophagus,2016
3. A long-surviving patient with advanced esophageal basaloid squamous cell carcinoma treated only with radiotherapy: case report and literature review;Maebayashi;BMC Gastroenterol,2017
4. Primary tumors of the esophagus other than squamous cell carcinoma-histologic classification and statistics in the surgical and autopsied materials in Japan;Suzuki;Int. Adv. Surg. Oncol.,1980
5. Basaloid squamous cell carcinoma: report of five cases;Morales-Puebla;Med. Oral Patol. Oral Cir. Bucal,2010