학술논문
Late Changes in Renal Volume and Function after Proton Beam Therapy in Pediatric and Adult Patients: Children Show Significant Renal Atrophy but Deterioration of Renal Function Is Minimal in the Long-Term in Both Groups.
Document Type
Article
Author
Li, Yinuo; Mizumoto, Masashi; Nitta, Hazuki; Fukushima, Hiroko; Suzuki, Ryoko; Hosaka, Sho; Yamaki, Yuni; Murakami, Motohiro; Baba, Keiichiro; Nakamura, Masatoshi; Ishida, Toshiki; Makishima, Hirokazu; Iizumi, Takashi; Saito, Takashi; Numajiri, Haruko; Nakai, Kei; Kamizawa, Satoshi; Kawano, Chie; Oshiro, Yoshiko; Sakurai, Hideyuki
Source
Subject
*PROTON therapy
*KIDNEY failure
*RISK assessment
*COMPUTED tomography
*TREATMENT effectiveness
*RETROSPECTIVE studies
*MAGNETIC resonance imaging
*ATROPHY
*LONGITUDINAL method
*KIDNEYS
*DISEASE risk factors
*CHILDREN
*ADULTS
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Language
ISSN
2072-6694
Abstract
Simple Summary: Understanding the age-specific effects of proton beam therapy (PBT) on kidney function is crucial for personalized treatment. This study compared the long-term impact of PBT on kidneys in pediatric and adult patients with adjacent malignancies. Findings reveal that children are more prone to renal atrophy post-PBT compared to adults, who experience minimal changes in kidney morphology. The percentage of irradiated volume receiving 10 Gy (RBE) and 20 Gy (RBE) may predict the degree of renal atrophy, especially in children. PBT has minimal impact on renal function deterioration in both age groups. This research informs treatment plans for patients in different ages, aiming to minimize renal complications and provide insights for personalized cancer care, ensuring better long-term kidney health outcomes and overall quality of life. To compare late renal effects in pediatric and adult patients with malignancies after PBT involving part of the kidney. A retrospective study was conducted to assess changes in renal volume and function in 24 patients, including 12 children (1–14 years old) and 12 adults (51–80 years old). Kidney volumes were measured from CT or MRI images during follow-up. Dose-volume histograms were calculated using a treatment planning system. In children, the median volume changes for the irradiated and control kidneys were −5.58 (−94.95 to +4.79) and +14.92 (−19.45 to +53.89) mL, respectively, with a relative volume change of −28.38 (−119.45 to −3.87) mL for the irradiated kidneys. For adults, these volume changes were −22.43 (−68.7 to −3.48) and −21.56 (−57.26 to −0.16) mL, respectively, with a relative volume change of −5.83 (−28.85 to +30.92) mL. Control kidneys in children exhibited a marked increase in size, while those in adults showed slight volumetric loss. The percentage of irradiated volume receiving 10 Gy (RBE) (V10) and 20 Gy (RBE) (V20) were significantly negatively associated with the relative volume change per year, especially in children. The CKD stage based on eGFR for all patients ranged from 1 to 3 and no cases with severe renal dysfunction were found before or after PBT. Late effects on the kidneys after PBT vary among age groups. Children are more susceptible than adults to significant renal atrophy after PBT. V10 and V20 might serve as predictors of the degree of renal atrophy after PBT, especially in children. PBT has a minimal impact on deterioration of renal function in both children and adults. [ABSTRACT FROM AUTHOR]