Abstract
The urinary excretion of the polyamines, putrescine, spermidine and spermine, was measured in 7 children with Beckwith''s syndrome. Putrescine excretion was raised and spermidine excretion reduced. The raised putrescine and the low spermidine ratios were highly significant. These results are consistent with a disturbance in a metabolic pathway under growth hormone-like regulation.