These markers may be found on the surface of cells or circulating in the body and are used to diagnose tumors or monitor their response to treatment. Although these markers are good indicators, they also find the non-malignant tumors that rarely require treatment. If the cancer is detected, the cell will try to repair it. If the cell is unable to accomplish this repair, it will undergo apoptosis. Causes of transformation to a tumor 1.
Tumor progression is the incremental development of increasingly malignant stated by a tumor.
Tumors relatively start benign, then over time can become weakly invasive, highly invasive, metastatice, or even remain noninvasive. 2. infection by oncogene viruses Certain families of viruses are able to trigger a neoplastic transformation in the cells that they infect. Cancerous cells often are found to contain nucleic acid sequences that are diagnostic of the virus. Viruses may either have DNA or RNA as the genetic material of the viral chromosome. The principal class of RNA tumor viruses that can cause cancer are the retrovirus family.