Benign Pyriform Fossa Neoplasm

**Semantic type:** Neoplastic Process

**Definition:** A neoplasm that arises from the pyriform sinus and is characterized by the absence of atypical or malignant cytological and architectural features, and absence of invasive features or metastatic potential.

**Synonyms:** - Benign Neoplasm of Pyriform Fossa - Benign Neoplasm of Pyriform Sinus - Benign Neoplasm of the Pyriform Fossa - Benign Neoplasm of the Pyriform Sinus - Benign Pyriform Fossa Tumor - Benign Pyriform Sinus Neoplasm - Benign Pyriform Sinus Tumor - Benign Tumor of Pyriform Fossa - Benign Tumor of Pyriform Sinus - Benign Tumor of the Pyriform Fossa - Benign Tumor of the Pyriform Sinus