benign neoplasm of pleura (Monarch Disease Ontology identifier MONDO_0021457) is a benign neoplasm that involves the pleura. Also known as: benign neoplasm of the pleura, benign pleural neoplasm, benign pleural tumor, benign pleural tumour, benign tumor of pleura, benign tumor of the pleura, benign tumour of pleura, benign tumour of the pleura.