Abstract
BackgroundThe kidneys are dose-limiting organs when total body irradiation or irradiation of the digestive tract is planned. The incidence of radiation-induced toxicity is probably underestimated due to its latency and confounding factors like chemotherapy. Material and methodsA search of the literature for radiation induced renal toxicity was performed. ResultsMost toxicities occur around 18 months. Renal mobility is significant in terms of dosimetric consequences, in particular in the young child. In case of total body irradiation, the dose responsible for a 5% risk of toxicities is around 16 Gy in 2 Gy fractions over 2 weeks. For partial renal irradiation, the volume receiving 20 Gy should be below 32% of the total renal volume. Compensatory mechanisms remain possible in areas receiving 12 Gy or less in 1 Gy fractions. When nephrotoxic chemotherapy, these tolerance doses must be lowered. Treatment of radiation-induced nephropathy may include ACE inhibitors. Discussion/conclusionProspective assessment of dose-volume histograms and consideration of renal mobility in treatment plans along with improving radiation techniques should help to improve treatment plans including the kidneys.
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