1. Incidence and treatment of brain metastasis in patients with esophageal carcinoma
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2. Introduction
   M.A. Hayat, 2016, Brain Metastases from Primary Tumors, Volume 3 CrossRef
3. Clinical diagnostic value of digestive endoscopic narrow-band imaging in early esophageal cancer
   Zhenhua Su et al, 2019, Oncology Letters CrossRef
4. Incidence of brain metastasis from esophageal cancer
   G. Welch et al, 2017, Diseases of the Esophagus CrossRef
5. Brain Metastasis from Esophageal Cancer
   Mohammad Reza Keramati et al, 2016, Brain Metastases from Primary Tumors, Volume 3 CrossRef
6. Brain metastases from esophageal cancer: a case-report
   N. V. Sevian et al, 2020, Head and Neck Tumors (HNT) CrossRef