Metabolic consequences of craniopharyingioma and their management.

Most patients diagnosed with craniopharyngioma survive long-term, but suffer many consequences of the disease and its treatment. Among the metabolic consequences, there is a high prevalence of panhypopituitarism and diabetes insipidus, mainly due to the surgical treatment. Obesity is also more prevalent in these patients than in the general population, and gets worse with time. It is a consequence of a diminished basal metabolic rate and a lower physical activity compared to that of matched controls, with a similar or lower caloric intake. Many different hormonal alterations that could be responsible for those changes in the energy balance have been found. Patients whose tumor involved the hypothalamus are more prone to develop obesity and its consequences. Cardiovascular risk factors are also more prevalent in these patients, leading to a high cardiovascular morbidity and mortality. Sleep disturbances, dysfunction in thermoregulation and thirst and a lower bone mineral density can also be found. Although randomized clinical trials comparing different treatments are lacking, it looks like therapeutic strategies have a minor influence on the risk of long-term sequelae.