A primary or metastatic malignant neoplasm involving the thymus. This category includes malignant thymomas, thymic lymphomas, primary thymic carcinomas, and metastatic carcinomas from other anatomic sites. The disease is thymus cancer (MONDO_0002586). Also known as: Thymus cancer, cancer of Thymus, cancer of the Thymus, cancer of thymus, malignant Thymus neoplasm, malignant Thymus tumor, malignant Thymus tumour, malignant neoplasm of Thymus.