In contrast to earlier reports, clinical actinic elastosis turned out to be the only protective factor for sporadic BCC. A special relationship between wrinkling and BCC risk could not be shown. For basic research, future work should be aimed at elucidating further the different forms of collagen repair processes after intermittent and/or chronic UV exposure. The data strongly support the recommendation that a change in recreational UV exposure habits in individuals, and sunburn avoidance in particular, are necessary not only because of the increased long-term risk of melanoma, but also because of the risk of other skin cancers such as sporadic BCC.

Short-term lower leg length was measured longitudinally using a high-precision device called a knemometer in 11 children with chronic renal failure and 12 normal children. The method has a high accuracy (mean standard error 0.13 mm) and may prove useful for prediction of long-term total body growth. Its application in renal patients undergoing corticosteroid, growth hormone (GH) and erythropoietin (EPO) therapy is documented. GH was shown to improve lower leg growth in an adolescent who already had passed the maximum of his pubertal spurt. EPO treatment produced no consistent increase of short-term growth.

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