A benign or malignant, primary or metastatic neoplasm involving the respiratory tract. The disease is respiratory tract neoplasm (MONDO_0020641, a Monarch Disease Ontology identifier). Also known as: neoplasm of respiratory tract, neoplasm of the respiratory tract, neoplasm, respiratory tract, neoplasms, respiratory tract, respiratory system neoplasm, respiratory tract tumor, respiratory tract tumour, tract neoplasm, respiratory.