tumorudviklingen
Tumorudvikling, also known as tumorigenesis or carcinogenesis, refers to the process by which normal cells transform into cancerous cells. This transformation is a complex, multi-step phenomenon driven by accumulated genetic and epigenetic alterations. These changes can affect genes that regulate cell growth, division, and death, leading to uncontrolled proliferation and the formation of a tumor.
The initial stages of tumor development often involve mutations in proto-oncogenes, which promote cell growth, or
As a tumor grows, it requires a blood supply to obtain nutrients and oxygen, a process called