"malignant neoplasm of the cervical esophagus"@en . "malignant neoplasm of cervical oesophagus"@en . "malignant neoplasm of cervical esophagus"@en . "malignant tumor of cervical part of esophagus (disorder)"@en . . "disease_ontology"^^ . "DOID:1111"^^ . "true"^^ . . "obsolete malignant neoplasm of cervical part of esophagus"^^ .