Children's Cancer Foundation

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Children's Cancer Foundation › About Childhood Cancer › Diagnosis and Treatment Glossary › Malignant

Malignant


  1. Describing a tumour that invades and destroys the tissue in which it originates and can spread to other sites in the body via the bloodstream and lymphatic system.  If untreated, such tumours cause progressive deterioration and death.  
  2. Describing any disorder that becomes life-threatening if untreated.