Copper deficiency is an uncommon cause of hematologic abnormalities in children that is often overlooked or misdiagnosed. Although cases have been reported because of malabsorption syndromes or after gastrointestinal surgeries, we report a case of copper deficiency-associated anemia and neutropenia in a child because of dietary restrictions, specifically, transitioning from a formula-based ketogenic diet to a pureed food-based ketogenic diet. On copper supplementation, the patient's anemia and neutropenia resolved. To our knowledge, this report is the first revealing copper deficiency anemia and neutropenia developing because of a ketogenic diet.

OBJECTIVE: This article aims to expand on the existing literature regarding the incidence of withdrawal pain following discontinuation of Trk inhibitors and to explore strategies that mitigate this withdrawal pain. DATA SOURCE: A retrospective observational study was conducted among patients who were at least 18 years-old or older and had documentation of starting larotrectinib or entrectinib at University of California, San Francisco (UCSF) between November 2018 and November 2022. Data were collected from electronic records and pharmacy databases and a total of 21 patients were identified in this study. DATA SUMMARY: Of the 21 patients included in this study, five patients (24%) experienced pain during temporary or permanent discontinuation of Trk inhibitor with the onset of withdrawal pain ranging from a few hours to three days following discontinuation. Various strategies were implemented to manage this pain including restarting of Trk inhibitor, tapering of Trk inhibitor on discontinuation, minimizing dose interruptions and use of prescription pain medications. CONCLUSION: This article illustrates the presence of withdrawal pain syndrome in patients stopping a Trk inhibitor treatment and highlight the need for patient education to avoid missing any doses and for development of a guideline for Trk inhibitor discontinuation.

Physicians are experiencing epidemic levels of work-related stress and burnout. Determine efficacy of mindfulness meditation delivered as a hybrid (in-person and digital) format to reduce perceived stress in pediatric residents. Pediatric residents (n = 66) were block randomized to a hybrid Mindful Awareness Practices (MAPs) intervention, comprised of one in-person 60-min session and 6-week access to a digitally delivered MAPs curriculum (n = 27) or wait-list control (n = 39). Perceived Stress Scale (PSS) was administered at baseline and post-intervention as the primary outcome measure. A priori secondary outcomes were measured using the Abbreviated Maslach Burnout Inventory-9, Beck Depression Inventory, Beck Anxiety Inventory, UCLA Loneliness Scale, and Pittsburgh Sleep Quality Index. After the first session, 58% participated at least one digital session (M = 2.0; SD = 1.3). MAPs participants showed significant decrease in PSS compared to controls, with between-group mean difference of 2.20 (95% CI 0.47-3.93) at post-intervention (effect size 0.91; 0.19-1.62). No secondary outcome group differences were detected. Exposure to a hybrid mindfulness intervention was associated with improvement in perceived stress among pediatric residents.Trial Registration: NCT03613441.