Association between BMI Change, Transaminases, and Other Metabolic Parameters in Children with Nonalcoholic Fatty Liver Disease.

Background: Weight loss and lifestyle interventions are the mainstay of treatment in pediatric NAFLD. There are gaps in the literature on the objective improvement in BMI to meaningfully impact NAFLD in children. Aim: To determine the decrease in BMI associated with a significant decline in ALT and other metabolic parameters. Methods: Retrospective chart review of pediatric patients with the diagnosis of NAFLD. Data were collected at the baseline and 6 and 12 months. A linear regression model was used to assess the percent change in BMI predictive of change in ALT and other metabolic parameters. Results: 281 charts were included. 71% of patients who had up to a 2.5% loss in BMI at 6 months had a decrease in ALT of up to 10 U/L compared to 43% patients who did not have a decrease in BMI up to 2.5% loss at the same time period (P=0.01). The linear regression model showed that 6-month and 12-month percent changes in BMI are predictive of 6-month and 12-month ALT changes (P=0.01 and 0.02), respectively. ALT normalization was achieved on 12% of patients with a ≥2.5% decrease in BMI at 6 months compared to 1% of patients that had no decrease of ≥2.5% decrease in BMI at 6 months (P=0.01). The mean BMI Z-score decline was 0.18 (P=0.001) in the group with a ≥2.5% decrease in BMI at 6 months. Conclusions: BMI loss of up to 2.5% and the mean BMI Z-score 0.18 are associated with a significant decrease in ALT of up to 10 U/L. BMI percent change at 6 months and 12 months is predictive of changes in ALT. These results should help guide providers in clinical practice set objective goals for the management of children with NAFLD resulting from obesity.

Recurrent Gastrointestinal Bleed Due to Small Bowel Vascular Malformation in a Patient with Turner Syndrome Diagnosed with Surgically Assisted Push Enteroscopy.

BACKGROUND Obscure gastrointestinal bleeding accounts for approximately 5% of all cases of gastrointestinal bleeding and the most frequent site is the small bowel. Turner syndrome (TS) is a genetic disorder of the second X chromosome in females. The association between gastrointestinal vascular malformations and Turner syndrome has been described in some case reports. Vascular malformation in Turner's syndrome can vary from asymptomatic to severe recurrent GI bleeds, but data on diagnosis and management of these patients are lacking. CASE REPORT A 14-year-old girl with TS presented with recurrent symptomatic melena. The initial work-up included a negative upper endoscopy, negative bidirectional endoscopies, and a video capsule endoscopy (VCE) that demonstrated large amount of blood and small erythematous lesion in the small bowel without active bleeding, and a negative Meckel scan. CT angiography was remarkable for prominent left lower mesenteric blood vessels, and a single-balloon enteroscopy demonstrated prominent vasculature throughout the small bowel. A a clip was placed at the site of a questionable bleed. The patient underwent a surgically assisted push enteroscopy due to recurrent bleeding; findings were consistent with diffuse vascular malformations. She was started on tranexamic acid and later transitioned to estrogen therapy without further reports of GI bleeding, anemia, or adverse effects from treatment 6 months after initial presentation. CONCLUSIONS Small bowel bleeding can be life-threating, and evidence-based guidelines in children are needed. Turner syndrome is associated with gastrointestinal vascular malformations, and suspicion for this diagnosis should be high for these patients when presenting with gastrointestinal bleeding. Estrogen might be an effective therapy in TS adolescent patients in the setting of diffuse vascular malformations (DVM).