Featuring Demian Dressler, DVM and Susan Ettinger, DVM, Dip. ACVIM (Oncology), authors of The Dog Cancer Survival Guide

Malignant Definition

Malignant: A tumor, which is dangerous and growing uncontrollably, is called malignant. This word is a synonym for cancerous. Another word used to refer to a malignant tumor or a cancer is malignancy.

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