What does the term metastasis refer to?

The term metastasis specifically refers to the process by which cancer cells spread from the primary site of the tumor to other non-adjacent organs or tissues in the body. This process involves the migration of these malignantly transformed cells through the lymphatic system or bloodstream to establish secondary tumors, which can be more difficult to treat and may signify more advanced stages of the disease. The significance of metastasis lies in its ability to alter the course of cancer treatment, prognosis, and patient outcomes, highlighting the need for careful monitoring and comprehensive management strategies in oncology.

Other choices relate to different medical concepts. For instance, the study of the nervous system pertains to neurology, while the increased curvature of the spine describes specific spinal conditions like kyphosis or scoliosis, and the washing out of an organ is a term used in certain medical procedures but does not connect to cancer pathology or the concept of metastasis.