Malignant Tumors
Definition: A cancerous mass of cells that have formed due to excessive cell division. Malignant tumor cells are abnormal and divide uncontrollably and without order.
Patients diagnosed with lung cancer have malignant tumors in their lungs. However, malignant tumors can be found anywhere within the body.
The opposite of a malignant, or cancerous, tumor is a non-cancerous, or benign tumor.
Also Known As: Cancer
