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  • Title: Patterns of growth and body proportions after total-body irradiation and hematopoietic stem cell transplantation during childhood.
    Author: Bakker B, Oostdijk W, Geskus RB, Stokvis-Brantsma WH, Vossen JM, Wit JM.
    Journal: Pediatr Res; 2006 Feb; 59(2):259-64. PubMed ID: 16439589.
    Abstract:
    Patterns of growth and body proportions were studied in 75 children receiving total-body irradiation (TBI) and hematopoietic stem cell transplantation (SCT) before onset of puberty. Of the 19 patients receiving GH, only data obtained before onset of GH were included. Thirty-two patients reached final height (FH). Median change in height SD score (SDS) between SCT and FH was -1.7 in boys and -1.1 in girls. Peak height velocity (PHV) was decreased in the majority of the patients (median PHV 5.7 cm/y in boys and 5.3 cm/y in girls), even though it occurred at appropriate ages. Changes in body proportions were analyzed by linear mixed-effects models. Decrease in sitting height SDS did not differ between boys and girls. In boys, decrease in leg length SDS was of comparable magnitude, whereas, in girls, decrease in leg length was less pronounced, leading to a significant decrease in SDS for sitting height/height ratio in girls only. The sex-specific effects of several variables on height SDS were analyzed by linear mixed-effects modeling, showing a slightly faster decrease in younger children and a more pronounced decrease during puberty in boys compared with girls. We conclude that 1) younger children are more susceptible to growth retardation after TBI and SCT, 2) pubertal growth is more compromised in boys, and 3) leg growth is relatively less affected in girls, possibly due to a high incidence of gonadal failure in girls.
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