Lukas Andereggen1, Benjamin Hess2, Robert Andres1, Marwan El-Koussy3, Luigi Mariani4, Andreas Raabe1, Rolf W Seiler1, Emanuel Christ5. 1. Department of Neurosurgery, Bern University Hospital, Inselspital, Switzerland. 2. Department of Endocrinology, Bern University Hospital, Inselspital, Switzerland. 3. Department of Neuroradiology, Bern University Hospital, Inselspital, Switzerland. 4. Department of Neurosurgery, University Hospital of Basel, Switzerland. 5. Department of Endocrinology, Bern University Hospital, Inselspital, Switzerland / Department of Endocrinology, Diabetology and Metabolism, University Hospital of Basel, Switzerland.
Abstract
PURPOSE: Craniopharyngioma-related hypothalamic obesity is a devastating complication with limited data on whether long-term follow-up should focus on problems other than endocrine deficiencies and weight gain. The primary endpoint was the assessment of predictors of hypothalamic obesity development; the secondary endpoint was the assessment of functional outcome (endocrine deficiencies, visual acuity) at long-term follow-up. METHODS: This retrospective case-note study examined craniopharyngioma patients with at least 2 years of follow-up. Clinical, radiological and biochemical characteristics were assessed at diagnosis, postoperatively, and at last follow-up. RESULTS: Thirty-two patients met the inclusion criteria. Median follow-up period was 9.8 years (range 2.2-33 years). Longitudinal changes in body mass index (BMI) were substantial (median ΔBMI/year was +0.48 kg/m2/year, interquartile range 0.28-1.33). The prevalence of patients with hypothalamic obesity had significantly increased at last follow-up (45 vs 4%; p = 0.003). Long-term pituitary deficiencies remained high. Diabetes insipidus was common (66% vs 34%, p<0.001), with postoperative diabetes insipidus but not hypothalamic involvement, being an independent predictor for hypothalamic obesity (odds ratio 15.2, 95% confidence interval 1.3-174.8, p = 0.03). Osteodensitometry in two thirds of patients at last follow-up revealed a pathological bone density in 53% of those tested. CONCLUSIONS: Rates of hypothalamic obesity and long-term pituitary deficiencies are substantial, with postoperative diabetes insipidus being a potential marker for hypothalamic obesity development. Besides long-term monitoring of endocrine deficiencies with consideration of osteodensitometry, early weight control programmes and continuing multidisciplinary care are mandatory in craniopharyngioma patients.
PURPOSE:Craniopharyngioma-related hypothalamic obesity is a devastating complication with limited data on whether long-term follow-up should focus on problems other than endocrine deficiencies and weight gain. The primary endpoint was the assessment of predictors of hypothalamic obesity development; the secondary endpoint was the assessment of functional outcome (endocrine deficiencies, visual acuity) at long-term follow-up. METHODS: This retrospective case-note study examined craniopharyngiomapatients with at least 2 years of follow-up. Clinical, radiological and biochemical characteristics were assessed at diagnosis, postoperatively, and at last follow-up. RESULTS: Thirty-two patients met the inclusion criteria. Median follow-up period was 9.8 years (range 2.2-33 years). Longitudinal changes in body mass index (BMI) were substantial (median ΔBMI/year was +0.48 kg/m2/year, interquartile range 0.28-1.33). The prevalence of patients with hypothalamic obesity had significantly increased at last follow-up (45 vs 4%; p = 0.003). Long-term pituitary deficiencies remained high. Diabetes insipidus was common (66% vs 34%, p<0.001), with postoperative diabetes insipidus but not hypothalamic involvement, being an independent predictor for hypothalamic obesity (odds ratio 15.2, 95% confidence interval 1.3-174.8, p = 0.03). Osteodensitometry in two thirds of patients at last follow-up revealed a pathological bone density in 53% of those tested. CONCLUSIONS: Rates of hypothalamic obesity and long-term pituitary deficiencies are substantial, with postoperative diabetes insipidus being a potential marker for hypothalamic obesity development. Besides long-term monitoring of endocrine deficiencies with consideration of osteodensitometry, early weight control programmes and continuing multidisciplinary care are mandatory in craniopharyngiomapatients.
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