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The Collaborative International Dictionary
malignant neoplasm

malignant neoplasm \malignant neoplasm\ n. (Med.), Same as malignancy[4].

Syn: malignancy, malignance, malignant tumor, metastatic tumor.

WordNet
malignant neoplasm

n. a tumor that is malignant and tends to spread to other parts of the body [syn: malignant tumor, metastatic tumor]