Growth and pubertal assessment after treatment in acute leukemia.

To evaluate the effect of leukaemia and its treatment on growth and puberty, we studied retrospectively the serial heights and pubertal development of 37 children with acute leukaemia. The age of diagnosis ranged from 10 months to 13 years, with a duration of follow-up varying from 2 years to 14 years. The SDS (Z score) which reflects the deviation of height measurements from the population mean was used to assess height change at yearly intervals. Pubertal assessment was also made using the Tanner standards. 25 (69%) children showed a falling trend in mean Z scores over a 5 year follow-up period. The difference between the mean Z scores at 0 and 5 years was statistically significant (p < 0.035). However, there was no significant correlation between age of onset of disease and duration of survival with the deviation in the Z score. 11 children did not demonstrate a fall in the Z scores. There were, however, no defined factors such as age of onset, duration of follow-up, and sex distribution which could predict growth failure. Pubertal assessment showed normal development in all children with the pubertal age group (n = 11), except for 3 boys, two of whom had received testicular irradiation.