synovium cancer (MONDO_0002403) is a cancer that involves the layer of synovial tissue. Also known as: cancer of layer of synovial tissue, cancer of synovial membrane of synovial joint, layer of synovial tissue cancer, malignant layer of synovial tissue neoplasm, malignant neoplasm of layer of synovial tissue, malignant neoplasm of synovial membrane of synovial joint, malignant neoplasm of synovium, malignant neoplasm of the synovium.