NCIT:C3028; esophageal neoplasm; esophageal neoplasms, benign and malignant; esophageal tumor; esophageal tumors; esophageal tumour; esophageal tumours; esophagus neoplasm; esophagus neoplasm (disease); esophagus tumor; http://identifiers.org/medgen/4547; http://identifiers.org/snomedct/126817006; http://linkedlifedata.com/resource/umls/id/C0014859; neoplasm of the esophagus; neoplasm of the oesophagus; oesophagus neoplasm; oesophagus neoplasm (disease); oesophagus tumour; tumor of esophagus; tumor of the esophagus; tumour of oesophagus; tumour of the oesophagus