The word "malignant" in medical terms refers to:

The term "malignant" in medical terminology specifically refers to invasive cancer. Malignant tumors have the ability to grow uncontrollably and spread to nearby tissues and other parts of the body via the bloodstream or lymphatic system. This invasive characteristic is what distinguishes malignant tumors from benign ones, which do not invade surrounding tissues or metastasize.

Malignant growths are often associated with more severe health risks and require careful management and treatment options. The treatment for malignancy may include surgery, chemotherapy, radiation therapy, or a combination of these, depending on the type and stage of cancer involved. The term is critical in the context of oncology as it influences the diagnosis, prognosis, and treatment decisions made by healthcare professionals. Understanding the terminology is essential for effective communication within the healthcare setting, especially when discussing patient conditions and treatment plans.