Comparison of energy expenditure, body composition, metabolic disorders, and energy intake between obese children with a history of craniopharyngioma and children with multifactorial obesity.

Craniopharyngioma is a histologically benign brain malformation with a fundamental role in satiety modulation, causing obesity in up to 52% of patients. Aim: To evaluate cardiovascular risk factors, body composition, resting energy expenditure (REE), and energy intake in craniopharyngioma patients and to compare the data with those from children with multifactorial obesity. Population: All obese children and adolescents who underwent craniopharyngioma resection and a control group of children with multifactorial obesity in follow-up between May 2012 and April 2013. Materials and methods: Anthropometric measurements, bioelectrical impedance, indirect calorimetry, energy intake, homeostatic model assessment insulin resistance (HOMA-IR), and dyslipidemia were evaluated. Results: Twenty-three patients with craniopharyngioma and 43 controls were included. Children with craniopharyngioma- related obesity had a lower fat-free mass percentage (62.4 vs. 67.5; p=0.01) and a higher fat mass percentage (37.5 vs. 32.5; p=0.01) compared to those with multifactorial obesity. A positive association was found between % REE and % fat-free mass in subjects with multifactorial obesity (68 +/- 1% in normal REE vs. 62.6 +/- 1% in low REE; p=0.04), but not in craniopharyngioma patients (62 +/- 2.7 in normal REE vs. 61.2 +/- 1.8% in low REE; p=0.8). No differences were found in metabolic involvement or energy intake. Conclusions: REE was lower in craniopharyngioma patients compared to children with multifactorial obesity regardless of the amount of fat-free mass, suggesting that other factors may be responsible for the lower REE.