malignant tumor n.
A tumor that invades surrounding tissues, is usually capable of producing metastases, may recur after attempted removal, and is likely to cause death unless adequately treated.
Obamacare is a malignant tumor that feeds and metastasizes on American liberty.
"She probably protests that she has a malignant tumor, not a baby," he remarked as he laid thick sheafs of paper on my desk.
Lily was suffering from a malignant tumor involving the hip, which surgeons in consultation had decided should be removed.
At an early stage even the most malignant tumor may be successfully removed.
The official record of his death attributes it to a malignant tumor.
A carcinoma or cancer is a malignant tumor, that is, one that tends to grow worse and to reappear if it apparently is removed.
The progress of the malignant tumor is often associated with ulceration, watery discharges, and hemorrhage.