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Children with newly diagnosed ALL showed decline of systolic and diastolic function during treatment with anthracyclines using cardiac biomarkers and myocardial 2D strain echocardiography. N-terminal-pro-brain natriuretic peptide levels were not related to echocardiographic strain parameters and cTnT was not a predictor for abnormal strain at T = 2.Therefore, the combination of cardiac biomarkers and myocardial 2D strain echocardiography is important in the assessment of cardiac function of children with ALL treated with anthracyclines.

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In order to study male gonadal function in Noonan syndrome, clinical and laboratory data, including inhibin B, were gathered in nine pubertal males diagnosed with Noonan syndrome. Bilateral testicular maldescent was observed in four, and unilateral cryptorchidism occurred in two. Puberty was delayed in three patients. Luteinising hormone (LH) levels were normal in all patients in our series, while follicle stimulating hormone (FSH) levels were raised in seven. Inhibin B was low in six males and just above the lower limit of normal in two. Importantly, all three men with normal testicular descent displayed signs of Sertoli cell dysfunction, indicating, in contrast to earlier reports, that bilateral cryptorchidism does not seem to be the main contributing factor to impairment of testicular function in Noonan syndrome. These findings suggest different mechanisms of disturbance in male gonadal function, which is frequently associated with Sertoli dysfunction.

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