Define "radiogenic tumors."

Radiogenic tumors are specifically defined as tumors that develop as a direct consequence of exposure to ionizing radiation. This type of tumor formation is linked to the genetic damage caused by radiation, which can lead to alterations in the DNA of cells. Over time, this damage can result in uncontrolled cell proliferation and ultimately lead to cancer. The connection between ionizing radiation and cancer has been well-documented, particularly in individuals who have undergone radiation therapy or have been exposed to significant environmental radiation, such as nuclear accident survivors.

In contrast, tumors arising from genetic mutations or environmental factors are not classified as radiogenic tumors, as these processes are independent of ionizing radiation exposure. Similarly, tumors that are present at birth, or congenital tumors, do not relate to radiation exposure and thus would not fit the definition of radiogenic tumors. Understanding these distinctions is crucial for recognizing the specific etiology of different tumor types in the context of radiation biology.