Distal gastric bypass surgery for the treatment of hypothalamic obesity after childhood craniopharyngioma.
BACKGROUND
Obesity resulting from damage to the hypothalamus, i.e. hypothalamic obesity, is a severe condition that currently lacks any effective evidence-based therapy.


OBJECTIVE
Our goal was to describe the course of hypothalamic obesity in a craniopharyngioma patient treated with distal gastric bypass surgery and to outline distinct aspects of multidisciplinary case management.


METHODS
A 29-year-old man, who had undergone craniopharyngioma resection at the age of 8, was referred to our Interdisciplinary Obesity Centre with a body mass index (BMI) of 52.0 kg/m(2), type 2 diabetes and obstructive sleep apnoea syndrome (OSAS). After careful preoperative preparation, including the adjustment of hormone substitution therapy for panhypopituitarism, nutritional counselling and a supervised exercise program, he underwent a distal gastric bypass operation.


RESULTS
Eighteen months after the operation the patient's BMI had decreased to 31.9 kg/m(2), type 2 diabetes was in complete remission, and OSAS appeared to be improved. Also, feelings of hunger were markedly reduced after the operation. A standard regimen of supplements successfully prevented any severe nutritional deficiencies. After weight loss, the dose of hydrocortisone could be distinctly reduced without any signs of adrenal insufficiency while GH substitution had to be markedly increased to achieve normal IGF1 levels.


CONCLUSIONS
Our case demonstrates that within a multidisciplinary team approach, a distal gastric bypass operation can be a safe and highly effective therapy for patients with hypothalamic obesity. Also, our findings hint at an effect of gastric bypass surgery on hunger and eating behaviour that may not essentially rely on hypothalamic mechanisms.
Schultes
Bernd
B
Interdisciplinary Obesity Center Department of Radiology, Kantonsspital St Gallen, Heidener Strasse 11, CH-9400 Rorschach, Switzerland. bernd.schultes@kssg.ch
Ernst
Barbara
B
Schmid
Florian
F
Thurnheer
Martin
M
D000328:Adult; D015992:Body Mass Index; D002648:Child; D003397:Craniopharyngioma / Q000473:pathology / Q000601:surgery*; D015390:Gastric Bypass; D006801:Humans; D007031:Hypothalamus / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008297:Male; D009767:Obesity, Morbid / Q000209:etiology / Q000601:surgery*; D010911:Pituitary Neoplasms / Q000473:pathology / Q000601:surgery*; D011183:Postoperative Complications / Q000601:surgery*