Preoperative BMI Predicts Postoperative Weight Gain in Adult-Onset Craniopharyngioma.

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Craniopharyngiomas, while benign, have the highest morbidity of all non-malignant sellar tumors. Studies on weight and metabolic outcomes in adult-onset craniopharyngioma (AOCP) remain sparse.To examine postsurgical weight and metabolic outcomes in AOCP and to identify any clinical predictors of weight gain.Retrospective chart review of AOCP patients who underwent surgery between 1/2014-5/2019 in a single pituitary center.45 AOCP patients with a minimum follow-up of 3 months. Median follow-up time was 26 months (IQR 10-44).Weight/BMI, metabolic comorbidities, and pituitary deficiencies were recorded at preoperative and last follow-up visits.Both weight and BMI were higher at last follow-up, with a mean increase of 3.4 kg for weight (p=0.015) and 1.15 kg/m 2 for BMI (p=0.0095). Median % weight change was 2.7% (IQR -1.1%, 8.8%). Obesity rate increased from 37.8% at baseline to 55.6% at last follow-up. One-third of patients had ~15% median weight gain. The prevalence of metabolic comorbidities at last follow-up was not different from baseline. Pituitary deficiencies increased postoperatively, with 58% of patients having ≥3 hormonal deficiencies. Preoperative BMI was inversely associated with postoperative weight gain, which remained significant after adjusting for age, sex, race, tumor and treatment characteristics. Patients with ≥3 hormonal deficiencies at last follow-up also had higher postoperative weight gain.In this AOCP cohort, those with a lower BMI at the preoperative visit had higher postoperative weight gain. Our finding may help physicians better counsel patients and provide anticipatory guidance on postoperative expectations and management.


View the full article @ The Journal of clinical endocrinology and metabolism


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