C00-C97: Malignant neoplasms

C97-C97: Malignant neoplasms of independent (primary) multiple sites

Malignant neoplasms of independent (primary) multiple sites refer to a group of serious conditions where cancerous growths, or malignant neoplasms, originate at multiple points within the body simultaneously, not due to metastasis or spreading from one site. These cancers begin and grow in more than one organ or tissue at the same time, representing unique and unrelated occurrences. The exact reason why this happens is still unclear in many cases, though certain genetic and environmental risk factors can predispose individuals to this situation. The symptoms of this condition vary greatly, depending on where the tumors are located. Common signs can be fatigue, unexplained weight loss, pain, changes in the skin, and changes specific to the organ or system affected, like respiratory difficulties or stomach discomfort. The diseases progress at variable rates, influenced by the types and locations of the tumors, the individual's overall health, and therapeutic interventions.