Testosterone concentrations in young pubertal and post-pubertal obese males.

Objective: Obesity in adult males is associated with hypogonadotropic hypogonadism. We evaluated the effect of obesity on plasma testosterone concentrations in pubertal and post-pubertal young males.

Design And Methods: Morning fasting blood samples were obtained from 25 obese [body mass index (BMI) ≥95th percentile] and 25 lean (BMI <85th percentile) males between the ages 14-20 years with Tanner staging ≥4.

Lithium-induced membranous glomerulonephropathy in a pediatric patient.

Lithium-induced glomerular toxicity is an infrequent occurrence in pediatric patients. We report a 13-year-old patient presenting with clinical and laboratory evidence of renal insufficiency after long-term lithium use. Biopsy revealed membranous glomerulonephropathy.