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Obesity and daytime sleepiness in relation to the localization of craniopharyngioma. The patient whose preoperative MRI (a) showed a large tumor extending to the suprasellar region and infiltrating the hypothalamus developed severe daytime sleepiness and, consequently, obesity (BMI: +14 SD [4]). The patient with a childhood craniopharyngioma of intrasellar localization seen in Figure 1(b) maintained normal weight (BMI: +1 SD [4]) and developed no daytime sleepiness.
