Malignant Ampulla of Vater Neoplasm

**Semantic type:** Neoplastic Process

**Definition:** A primary or metastatic malignant neoplasm involving the ampulla of Vater.

**Synonyms:** - Malignant Ampulla of Vater Tumor - Malignant Neoplasm of Ampulla of Vater - Malignant Neoplasm of the Ampulla of Vater - Malignant Tumor of Ampulla of Vater - Malignant Tumor of the Ampulla of Vater - Malignant neoplasm of ampulla of Vater