C79: Secondary malignant neoplasm of other and unspecified sites

The medical conditions grouped under the term "Secondary malignant neoplasm of other and unspecified sites" refer to the type of cancer that has spread from its original location (primary site) to other parts of the body. This process is known as metastasis. These secondary tumors are characterized by their original cell type and location, despite their new location within the body. The way cancer spreads and the sites it affects can differ significantly depending on the type of primary cancer. The symptoms also vary based on the location of these secondary tumors. For instance, secondary tumors in the bones may lead to pain or fractures, while those in the lungs can cause persistent cough or shortness of breath. Disease progression is typically rapid, with the cancer cells growing and dividing at an accelerated rate beyond the body's control. All body systems could potentially be affected due to the spread of these secondary malignant neoplasms.