A primary or metastatic malignant neoplasm affecting the pleura. A representative example of primary malignant pleural neoplasm is the malignant pleural mesothelioma. A representative example of metastatic malignant neoplasm to the pleura is metastatic carcinoma that has spread to the pleura from another anatomic site. The disease is pleural cancer (MONDO_0006294). Also known as: cancer of pleura, cancer of the pleura, malignant neoplasm of pleura, malignant neoplasm of the pleura, malignant pleura neoplasm, malignant pleural neoplasm, malignant pleural tumor, malignant pleural tumour.