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Importance Timely identification of aortic stenosis (AS) is essential for appropriate clinical management, yet screening remains limited by dependence on comprehensive echocardiography and trained imaging personnel. Objective To develop and validate a deep learning algorithm for detection of moderate or greater AS and prospectively evaluate its performance using artificial intelligence (AI)–guided focused cardiac ultrasound (FoCUS) acquired by novice operators. Design, Setting, and Participants This diagnostic study included retrospective algorithm development and validation and prospective evaluation of AI-guided FoCUS across Mayo Clinic sites in the Midwest, Arizona, and Florida. The model was developed using 6753 patients and evaluated in internal validation (n = 852), internal test (n = 844), and validation (n = 1912) cohorts. Performance was assessed on FoCUS acquired by experienced sonographers (n = 602) and prospectively by novice operators (n = 1302). The retrospective model development and validation cohorts comprised studies performed from January 2005 through September 2022. Prospective study was conducted in 2 enrollment periods from June to August 2024 and from June to September 2025. Participants from both periods were combined to comprise the final prospective cohort. Exposure AI-guided FoCUS acquisition and automated deep learning–based assessment for detection of moderate or greater AS. Main Outcomes and Measures Detection of moderate or greater AS. Performance was assessed using area under the receiver operating characteristic curve (AUROC), sensitivity, specificity, and positive predictive value. Results The model demonstrated excellent discrimination in the internal test cohort (AUROC, 0.99; 95% CI, 0.98-1.00) and geographically distinct validation cohorts in Arizona (AUROC, 0.99; 95% CI, 0.97-1.00) and Florida (AUROC, 0.99; 95% CI, 0.96-1.00). Among FoCUS examinations acquired by experienced sonographers, sensitivity was 95% (95% CI, 82-99) and specificity was 97% (95% CI, 95-98). In the prospective novice-operator cohort, 1258 of 1302 examinations (96.6%) were suitable for automated analysis. Sensitivity was 93% (95% CI, 82-99) and specificity was 96% (95% CI, 95-97). Expert review of AI-positive and uninterpretable examinations increased the positive predictive value from 49.4% to 91.1%, with sensitivity of 85.4%. Conclusions and Relevance A deep learning algorithm accurately detected moderate or greater AS across validation cohorts in this study. In prospective evaluation, novice operators were able to acquire AI-guided FoCUS examinations that enabled accurate detection of moderate or greater AS. These findings support a scalable strategy that may expand access to AS detection in settings with limited echocardiography resources.

Abstract T-cell immune tolerance is established in part through the activity of the autoimmune regulator (AIRE) transcription factor in medullary thymic epithelial cells (mTEC) of the thymus. AIRE induces expression of peripheral tissue–specific self-antigens for presentation to naïve T cells to promote activation/deletion of autoreactive T cells. This traditional role of AIRE in mTECs is to prevent autoimmunity. Herein, we demonstrate that tumors mimic the role of AIRE in mTECs to evade immune rejection. We found that AIRE induced a profile of “selfness” at the RNA and protein levels which, when presented on major histocompatibility complexes (MHC), shielded the tumor from inherently self-tolerized T cells. Moreover, we describe an in vivo immunotherapy in which engineered changes in AIRE expression in tumor cells altered their profile of selfness, exposing both AIRE-modified and parental unmodified tumor cells to T-cell attack. Therefore, by resetting the immunologic selfness of cancer cells, this AIRE-mediated immunotherapy (i) converted a highly tolerized T-cell compartment into a tumor-reactive T-cell population; (ii) conferred upon nonimmunogenic tumors de novo sensitivity to immune checkpoint blockade; (iii) removed the need to identify potentially immunogenic tumor-associated antigens as targets for generation of T-cell responses; and (iv) lead to potent T cell–mediated rejection of aggressive, immunologically cold, nonimmunogenic tumors. Patient RNA sequencing data showed that the expression of AIRE predicted response to immune therapies with a strong correlation between AIRE expression and markers of T-cell receptor signaling, suggesting that our studies have therapeutic translational value.

PURPOSE Detection of bone marrow disease has been a major component of rhabdomyosarcoma (RMS) staging with bilateral bone marrow aspirates/biopsies (BMAB) from the iliac crests considered the diagnostic gold standard. This study's goal was to determine if 2- 18 F-labeled fluorodeoxyglucose positron emission tomography/computed tomography ([ 18 F]FDG PET/CT) or PET/magnetic resonance imaging (MRI) may replace BMAB in RMS staging. METHODS Patients were recruited in Europe and North America. Medical records, FDG PET/CT or FDG PET/MRI (PET), and BMAB reports were collected retrospectively. Images were re-reviewed by nuclear medicine physicians at the patients' home institutions if PET reports indicated increased FDG uptake at bone/bone marrow sites or if tumor cells were detected in bone marrow samples. RESULTS PET imaging and BMAB were performed before chemotherapy and tumor resection in 301 patients with FDG-avid RMS. Bone marrow metastases were detected by PET and BMAB in 54, by PET only in 24, and by BMAB only in one of 301 patients with FDG-avid primary tumors. Absence of bone marrow metastases was confirmed by PET and BMAB in 222 of 301 patients. These observations translated into 98% sensitivity and 90% specificity for PET in detecting bone marrow metastases when BMAB was considered as gold standard. FDG-avid marrow disease was patchy (1-5 foci) in one third of cases. Patients with marrow disease indicated by PET and BMAB had more FDG-avid bone marrow foci, more metastatic sites, and lower survival than those with marrow disease indicated by PET only, suggesting more advanced disease stages. CONCLUSION Bone marrow sampling may be omitted in patients without evidence of FDG-avid bone marrow disease by PET. If there are FDG-avid bone marrow lesions, further investigation by MRI and/or biopsy should be considered.

Objective Epidemiologic estimates for age of systemic lupus erythematosus (SLE) diagnosis are limited, particularly for men and racial and ethnic subpopulations in the United States. Leveraging the Centers for Disease Control and Prevention (CDC) National Lupus Registry network of population‐based SLE registries, meta‐analyses were performed estimating age‐specific incidence of SLE by sex, race, and ethnicity. Methods The CDC network of SLE registries includes five state‐based registries, plus a sixth Indian Health Service registry. Incidence periods spanned calendar years 2002‐2018. Registries provided age‐specific incidence of SLE, fulfilling the American College of Rheumatology (ACR) SLE classification criteria, per 100,000 person‐years, stratified by sex, race, and ethnicity for the meta‐analyses. Results Incidence rates among women were highest for those aged 30‐39 (12.7, 95%CI: 9.5‐16.8), while rates among men were highest for those aged 60‐69 (2.1, 95%CI: 1.3‐3.4). Black women aged 20‐39 had the highest SLE incidence rates (23.6, 95%CI: 20.7‐26.8). Among women diagnosed with SLE before age 20, incidence was highest among Asian (6.5, 95%CI: 2.8‐15.2) individuals. Among women diagnosed with SLE after age 60, incidence was highest among American Indian/Alaska Native (9.4, 95%CI: 3.4‐15.4) individuals. Weighted percentages show 10.0% of those with SLE were diagnosed before age 20, while 15.1% were diagnosed after age 60. The largest proportion of individuals with SLE, 22.1%, were diagnosed between 30‐39 years. Conclusions This study provides comprehensive sex‐ and race‐specific estimates of age at SLE diagnosis. The substantial later in life SLE incidence among men and disease burden in pediatric and older populations should raise awareness in considering SLE in the differential diagnosis in previously underrecognized groups.

BACKGROUND AND OBJECTIVES Neonatal tracheal intubation is a high-risk procedure, and multiple attempts are associated with adverse events. At our tertiary neonatal intensive care unit, the baseline first-attempt success rate was 45%, which we aimed to increase to over 55% through a quality improvement (QI) initiative. METHODS A multidisciplinary team conducted a QI project using the define-measure-analyze-improve-control framework. Root cause analysis identified poor glottic visualization and patient instability as primary drivers of failure. Plan-do-study-act cycles were carried out (April 2023–July 2024), followed by a sustainability phase (August 2024–May 2025). Key interventions included the phased implementation of video laryngoscopy (VL) as the primary intubation device and the standardization of oxygenation during laryngoscopy using nasal high flow. First-attempt success was tracked using statistical process control, and bimonthly VL use was monitored as a process measure. RESULTS A total of 642 intubations were analyzed. By control chart analysis, the first-attempt success rate increased from a baseline of 45% to a sustained process mean of 61% during the intervention and sustainability phases. VL use increased from 0% at baseline to 70% to 90% during the sustainability phase. Success rates improved across all clinician types and locations. Notably, first-attempt success in infants weighing less than 1000 g increased from 38% at baseline to 62% during the intervention phase. CONCLUSION A systematic QI initiative focused on VL and standardized oxygenation improved and sustained neonatal intubation success rates, exceeding the project aim. The maintenance of high-success rates confirms the durability of these safety improvements.

Abstract Abdominal compartment syndrome (ACS) is defined as elevated intra-abdominal pressure resulting in dysfunction of at least one thoracoabdominal organ. Diagnosing ACS is particularly challenging in critically ill patients. This study aimed to identify specific CT imaging findings predictive of ACS by comparing cohorts with a clinical diagnosis of ACS and critically ill patients without this diagnosis. A retrospective case–control study identified patients with a clinical diagnosis of ACS. A matched control cohort consisted of critically ill patients without a diagnosis of ACS. Three radiologists, blinded to the patients' diagnosis and clinical course, reviewed CT scans for 19 different signs. Univariate analysis, logistic regression, and receiver operating characteristic (ROC) curve analysis were performed. Thirty-one patients with ACS and 36 without ACS were enrolled. On univariate analysis, abdominal anteroposterior-to-transverse dimension ratio (AR; p = 0.0002), peritoneal to abdominal height ratio (PAR) (p = 0.007), contour changes of solid organs (CCSO) (p = 0.005), and retroperitoneal collections (p = 0.02) were significant. On logistic regression analysis, only PAR was significant (p = 0.01). The presence of at least one of PAR >0.52 or AR >0.75 had sensitivity of 81% and specificity of 81% for predicting ACS. The presence of both of these signs had a specificity of 100% for ACS. Radiologists should consider ACS in critically ill patients when CT shows increased AR or PAR. CCSO and large retroperitoneal collections are secondary signs. Recognition of these imaging findings may aid in the timely and accurate diagnosis of ACS in clinical practice.

Abstract Stress injuries of the lunate are rare and have been occasionally described in tennis players. Previously reported cases typically involve bone marrow edema or incomplete stress reactions. We report two elite tennis players presenting with advanced lunate stress fractures that were initially interpreted as Kienböck disease. A retrospective review was performed of patients presenting with lunate fractures in association with competitive tennis playing. Presenting symptoms, imaging studies, treatment, and outcomes were evaluated. Healing was assessed on serial computed tomography (CT) scans by the treating surgeon and was defined as osseous continuity across the fracture site on sagittal and axial slices. A literature review was performed of the world English literature. Magnetic resonance imaging (MRI) demonstrated lunate abnormalities in both athletes. CT imaging revealed a distinct fracture line involving the dorsal aspect of the lunate with associated fragment sclerosis. Conservative management failed to resolve symptoms. Surgical treatment consisted of fragment excision in one case and internal fixation in the other. Both patients returned to play. Lunate stress fractures should be considered in tennis players presenting with long-standing dorsal wrist pain. These lesions may mimic Kienböck disease on MRI, and CT can provide valuable information for diagnostic confirmation in advanced stages. Conservative treatment may be inadequate to return patients to competitive tennis. IV.

Myeloproliferative neoplasm (MPN) patients are at risk of splanchnic vein thromboses (SVT). Prior studies have failed to demonstrate a benefit of hydroxyurea therapy in preventing recurrent thrombosis after SVT, but are limited by small sample sizes and inability to account for starting, stopping, or switching of cytoreductive therapies. To better assess the impact of cytoreductive therapy on thrombosis recurrence, we performed a retrospective cohort study of MPN-SVT patients from the international GASTRO-MPN Consortium, treating cytoreductive therapy as a time-dependent covariate. We identified 757 patients, of which 43% were treated with cytoreductive therapy. During a median follow-up of 7.4 years, 256 patients (34%) had thrombosis recurrence; 145 (19%) had SVT extension/recurrence/TIPS thrombosis, 138 (18%) an thrombosis recurrence outside the splanchnic bed (74% were venous). Additionally, 262 patients (35%) experienced clinically relevant bleeding and 170 (22%) died. After adjusting for age, sex, prior thrombosis, timing of MPN diagnosis relative to SVT, anticoagulation initiation within 30 days of SVT diagnosis, MPN type, JAK2 status, other cancers and cirrhosis, cytoreductive therapy was associated with a decreased risk of recurrent thrombosis (HR 0.67 95%CI 0.50-0.89, p=0.01). This was driven by a lower risk of SVT extension/recurrence (HR 0.62 95%CI 0.42-0.90, p=0.01) but not by extra-splanchnic thrombosis recurrence (HR 0.97 95%CI 0.72-1.30, p=0.82). In a subgroup of patients without erythrocytosis/thrombocytosis at initial SVT (n=275), cytoreductive therapy was associated with a HR 0.65 (95%CI 0.40-1.07, p=0.09) for recurrent thrombosis. These data support the use of cytoreductive therapy in MPN-SVT patients to prevent recurrent thrombosis, particularly SVT extension/recurrence.