Remnants of incomplete or abnormal cell division, such as micronuclei and aneuploidy, could contribute to the spread of cancer. When cells divide incorrectly, they may produce genetic material that is extruded into micronuclei, which can lead to genomic instability. This instability can result in genetic mutations, potentially promoting tumor growth and metastasis. Understanding these processes is essential for developing strategies to control cancer progression and is an active area of cancer research.