Esophageal Neuroendocrine Tumor G1

**Semantic type:** Neoplastic Process

**Definition:** A rare, well-differentiated, low-grade neoplasm with neuroendocrine differentiation that arises from the esophagus. The mitotic count is less than 2 per 2 mm2 and the Ki-67 index is less than 3%. Most cases have a polypoid appearance, are small lesions, and found incidentally.

**Synonyms:** - Esophageal NET G1