A tumor composed of atypical neoplastic, often pleomorphic cells that invade other tissues. Malignant neoplasms often metastasize to distant anatomic sites and may recur after excision. The most common malignant neoplasms are carcinomas (adenocarcinomas or squamous cell carcinomas), Hodgkin and non-Hodgkin lymphomas, leukemias, melanomas, and sarcomas.

Synonyms: malignant Growth neoplasm, malignant malignancy primary cancer malignant neoplasm malignant neoplastic disease malignant neoplasm (disease) cell type cancer organ system cancer neoplasm (disease), malignant cancer malignant tumor CA