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Radiosensitivity of Cancer Stem Cells in Lung Cancer Cell Lines

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Xavier Muracciole¹, Jean Régis

¹Service de Neurochirurgie Fonctionnelle et Stéréotaxique, Hôpital d'Adulte de la Timone, Marseille, France.

Progress in Neurological Surgery

|September 24, 2008

Summary

This summary is machine-generated.

Radiation exposure can cause brain tumors, with risk increasing over time and varying by dose and tissue volume. Understanding this long-term risk is crucial for patient communication and treatment decisions.

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Stereotactic Radiosurgery for Gynecologic Cancer

Stereotactic Radiosurgery for Gynecologic Cancer

Published on: April 17, 2012

Area of Science:

Neuro-oncology
Radiation oncology
Medical physics

Background:

Radiation-induced tumors are defined by latency, site, and pathological type, often lacking traditional criteria.
The central nervous system is sensitive to radiation, with no apparent threshold dose for tumor development.
Risk factors include age at exposure and individual genetic susceptibility.

Observation:

Cerebral radiation-induced tumors may result from low doses to large volumes or high doses to small volumes.
Observed latency periods range from 5 to 30 years, with relative risk peaking between 20-25 years post-exposure.
Reported cases of radiation-associated glioblastoma and vestibular schwannoma after radiosurgery challenge traditional diagnostic criteria.

Findings:

Relative risk for radiation-induced tumors can range from 1.57 to 8.75 per Gray (Gy), increasing with observation time.
Low-dose, large-volume irradiation (e.g., tineas, acute leukemia) and high-dose, small-volume irradiation (e.g., pituitary tumors, meningiomas) are implicated.
The incidence of radiation-induced tumors is influenced by age at exposure and hereditary factors.

Implications:

Accurate communication of long-term risks (estimated <1 in 1,000) is essential for patients undergoing radiation therapy.
Risk-benefit analysis must consider operational risks of benign tumor treatment (1% perioperative mortality) and untreated arteriovenous malformations (1% annual hemorrhagic risk).
Further research is needed to refine diagnostic criteria and risk assessment for radiation-induced central nervous system tumors.