What does radiosensitive mean?
Radiosensitivity is the relative susceptibility of cells, tissues, organs or organisms to the harmful effect of ionizing radiation..
Which malignant tumors are very radiosensitive?
Leukemias and lymphomas, while exceedingly radiosensitive, are not readily radiocurable. This article discusses recent progress in radiotherapy and other complementary treatments, including malignant lymphomas of the stomach, head and neck cancer, and lung cancer, with special emphasis on treatment success and QOL.
What is a radioresistant tumor?
Clinically, a tumor is considered radioresistant when irradiation is unable to reduce its volume or when a recurrence occurs after a possible regression. However, tumors with histological characteristics identical to a radioresistant tumor can be highly responsive to radiotherapy treatment.
Which organ is most radiosensitive?
The digestive tract is among the most radiosensitive organs in the body and its function, which is partly regulated by gastrointestinal (GI) peptides, can be affected by radiation exposure.
Which part of the cell cycle is most sensitive to radiation?
Cells in late G2 and mitosis (M-phase) are the most sensitive to radiation, and cells in late synthesis (S-phase) are the most resistant (Fig.
Is lymphoma radiosensitive?
Lymphoma is rising in incidence and there is a continued need for new and novel therapeutic options. Lymphomas are extremely radiosensitive, but the majority of patients are not candidates for involved field radiation therapy. An intact immune system has a critical role in suppressing lymphomagenesis.