Malignant Neoplasm of the Upper Third of the Esophagus

**Semantic type:** Neoplastic Process

**Definition:** A primary or metastatic malignant neoplasm involving the upper third segment of the esophagus.

**Synonyms:** - Malignant Neoplasm of Proximal Third of Esophagus - Malignant Neoplasm of Upper Third of Esophagus - Malignant Neoplasm of the Proximal Third of the Esophagus - Malignant Tumor of Proximal Third of Esophagus - Malignant Tumor of Upper Third of Esophagus - Malignant Tumor of the Proximal Third of the Esophagus - Malignant Tumor of the Upper Third of the Esophagus - Malignant neoplasm of upper third of esophagus