Analytical, Diagnostic and Therapeutic Techniques and Equipment Commons^™

A Fishy Situation: Hand Infection Due To Mycobacterium Marinum Mistaken For Giant Cell Tumor, Alynna Knaub, Dylan Baker, Jennifer Hanrahan

Department of Medicine Faculty Publications

Mycobacterium marinum is an acid-fast bacterium (AFB) associated with exposure to water and aquatic species. When inoculated, infection can result in nodular cutaneous lesions. In the absence of detailed history or culture data, these nodular skin lesions can be mistaken for noninfectious orthopedic conditions. We present a case of M. marinum mistaken for a giant cell tumor. This case illustrates the overlap in these conditions, as well as the utility of QuantiFERON Gold testing to provide supportive evidence for the diagnosis of Mycobacterium marinum.

Persistent Hypoxemia On Home Sleep Apnea Testing Prompting Further Evaluation For Pulmonary Embolism: A Case Report, Kyle Admire, Andrew Githaiga

Department of Medicine Faculty Publications

Obstructive sleep apnea is a condition characterized by recurrent upper airway collapse during sleep, which may be associated with sleep disruption and repetitive oxygen desaturations. It is diagnosed by nocturnal in-lab polysomnography or home sleep apnea testing. We present a case of an otherwise healthy individual who had home sleep apnea testing that revealed persistent, unexplained hypoxemia which, on further investigation, was found to be due to a saddle pulmonary embolism.

Concomitant Transcatheter Edge-To-Edge Repair For Mitral And Tricuspid Regurgitation For Polyvalvular Disease, Omar Khan, Matthew Summers

Department of Medicine Faculty Publications

This patient is a 77-year-old male with non-ischemic cardiomyopathy, severe tricuspid regurgitation, and moderate mitral regurgitation who underwent simultaneous transcatheter edge-to-edge repair of both mitral and tricuspid valves. Post-procedure, the patient exhibited significant symptomatic improvement and reduced regurgitation severity, highlighting the feasibility of dual-valve TEER in high-risk patients.

Aggressive Natural Killer Cell Leukemia: A Rare And Rapidly Progressive Hematologic Malignancy—Case Report And Literature Review, Jennifer Priessnitz, Ali Hariri, Yuliya Levkiavska, Kyle E. Bonner, Stephan I. Fisher, Joshua M. Sill

Department of Medicine Faculty Publications

Aggressive natural killer cell leukemia (ANKL) is a rare, fulminant hematologic malignancy characterized by neoplastic proliferation of mature NK cells. It is frequently associated with Epstein-Barr virus (EBV) infection, although EBV-negative cases have also been reported. While typically observed in young to middle-aged adults of East Asian descent, increasing recognition has led to identification of ANKL across diverse age groups and ethnicities. The disease is defined by a rapid clinical course and poor prognosis, underscoring the importance of early diagnosis and effective treatment. We present a case of a 71-year-old Caucasian male who developed fever, altered mental status, hepatosplenomegaly, pancytopenia, …

Combined Snare And Buddy-Balloon Strategy For Failed Valve Crossing In Valve-In-Valve Transcatheter Aortic Valve Replacement, Hira Sarfraz, Muhammad U. Javed, Parth K. Parikh, Joshua A. Cohen, Raymond L. Benza, Matthew R. Summers, Deepak R. Talreja

Department of Medicine Faculty Publications

Background Retrograde valve crossing during valve-in-valve transcatheter aortic valve replacement (ViV TAVR) may fail despite modern delivery systems. Case Summary A 67-year-old man with a degenerated 27-mm Magna Ease bioprosthesis and unfavorable aortic geometry (kinked ascending aorta at a prior surgical graft site) underwent ViV TAVR, where retrograde valve crossing failed despite multiple stiff guidewires and snare traction alone. Successful delivery of a 29-mm Evolut FX+ was ultimately achieved by combining gooseneck-snare traction for coaxial realignment with a partially inflated Tyshak buddy balloon acting as a mechanical ramp across the surgical valve frame. Discussion This case demonstrates a structured, stepwise …

Antibody-Drug Conjugates Beyond Her2 In Non-Small Cell Lung Cancer (Nsclc): Mechanisms, Emerging Targets, And Future Directions, Ahmed Ismail, Akash Desai, George R. Simon, Yanis Boumber

Department of Medicine Faculty Publications

Antibody–drug conjugates (ADCs) are a rapidly evolving class of oncology therapeutics that enable precise delivery of potent cytotoxic agents to tumor cells while minimizing systemic toxicity. While HER2-targeted ADCs such as trastuzumab deruxtecan (T-DXd) in HER2-mutant, Datopotamab deruxtecan (Dato-Dxd) in EGFR-mutant, and telisotumumab vedotin (Teliso-V) in MET IHC 3+ expressing lung cancer have already established a clinical role in non-small cell lung cancer (NSCLC), multiple ADCs targeting alternative antigens, including additional TROP2 ADCs, HER3, MET, CEACAM5, B7-H3, Nectin-4, and others, are now in advanced clinical development. This review synthesizes the current evidence for non-HER2 ADCs in NSCLC, highlighting mechanisms of …

Enlarging Fingertip Nodule Mimicking A Pyogenic Granuloma In A Man In His 60'S, Avery H. Seward, Jocelyn H. Larocque, Stephen M. Hughes

Department of Medicine Faculty Publications

[Case presentation] A man in his 60's with a history of hypertension, hyperlipidemia, and resected colon cancer in remission presented with a 4-month history of an enlarging nodule on the right fourth fingertip. The patient recalled having a splinter removed from the same site a few weeks prior to the development of the lesion. The lesion was initially diagnosed by an orthopaedist as a pyogenic granuloma (Figure 1a), and the patient was advised to apply table salt to the area several times daily. However, the lesion continued to enlarge over 3 months with occasional bleeding and mild tenderness. Physical examination …

International Myositis Assessment And Clinical Studies Guidelines For Risk-Based Cancer Screening: An External Validation In Patients With Dermatomyositis Seen At A Metropolitan Academic Center, Isabel Silva, Jasper Dayanan, Alexandra Nigro, Capriana Jiang, Ma Georgina Erfe, Trixie Rivera, Saakshi Khattri

Department of Medicine Faculty Publications

Objective

Dermatomyositis (DM) is an idiopathic inflammatory myopathy (IIM) characterized by muscle weakness, skin findings, and increased malignancy risk. Cancer risk is greatest in the three years before or after DM onset, termed paraneoplastic DM. The International Myositis Assessment and Clinical Studies Group (IMACS) set forth evidence-based guidelines for risk stratification and cancer screenings for newly diagnosed patients with IIM. '

Methods

We retrospectively reviewed the records of 413 patients with a known diagnosis of DM or clinically amyopathic DM at the Mount Sinai Health System (2019-2024). Demographics, clinical findings, laboratory results, myositis autoantibody panels, and cancer screening or diagnosis …

Baseline Lymphopenia Predicts Survival In Ici-Naïve Solid Tumor Patients Receiving Immune Checkpoint Inhibitors: A Propensity-Matched Real-World Pan-Cancer Analysis, Ahmed Ismail, Nina Balanchivadze, George R. Simon, Yanis Boumber

Department of Medicine Faculty Publications

Background: Baseline lymphopenia is common among advanced solid tumors and may influence the efficacy/safety of immune checkpoint inhibitors (ICIs), but large real-world evidence is limited. We evaluated the association between baseline absolute lymphocyte count (ALC) and clinical outcomes in adults with solid tumors treated with ICIs in routine practice. Methods: We performed a retrospective cohort study using TriNetX. Adults with solid tumors who received pembrolizumab, nivolumab, or atezolizumab (ICI-Naïve) between January 2015 and June 2026 were included. Baseline ALC was measured within 30 days before first treatment and was classified as lymphopenic (ALC < 1.5 × 10⁹/L) or non-lymphopenic (ALC ≥ 1.5 × 10⁹/L). Propensity score matching (1:1) yielded 5249 patients per group. The index date was the first immunotherapy date, and outcomes were assessed at 6, 12, 24, 36 months, and 5 years. The primary outcome was 24-month overall survival (OS); secondary outcomes were OS at 6 and 12 months and 6-month risks of healthcare utilization, immune-related adverse events (irAEs), and serious infections; and exploratory outcomes included OS at 36 months and 5 years. All outcomes were analyzed using Kaplan–Meier analysis, Cox proportional hazards models, and risk ratios. Subgroup analysis included OS stratified by solid tumor subtypes and prior lines of therapy. Results: After matching, patients with baseline lymphopenia …

When Unilateral Leg Swelling Is Not Deep Vein Thrombosis: A Case Of Disseminated Kaposi Sarcoma Revealing Advanced Human Immunodeficiency Virus, Ahmed Ismail, Zachary Wilson, Thomas Currow, Michael Dileonardo, Carsten Kirby

Department of Medicine Faculty Publications

Kaposi sarcoma (KS) is an acquired immunodeficiency syndrome (AIDS)-defining malignancy that can involve the skin, lymph nodes, and visceral organs in patients with advanced human immunodeficiency virus (HIV). We report the case of a 35-year-old man with no known prior medical history who presented to the charity care clinic complaining of recurrent thrush and two weeks of progressive right lower extremity swelling. His physical examination revealed painful, pruritic violaceous papules and plaques over the proximal right thigh that had been present for one week. He was referred to the emergency department (ED) for further workup. Venous duplex ultrasonography was negative …

Redo Tavr With Asymmetric Coronary Risk: Interpreting Borderline Ct Findings, Connor J. Mckechnie, Nicolas J. Valle, Omar A. Saleh, Matthew R. Summers, Deepak R. Talreja

Department of Medicine Faculty Publications

Image(s)

Computed tomography (CT) and computational modeling (DASI) in redo transcatheter aortic valve replacement (TAVR) planning.

Case Summary

A 77-year-old woman presented with severe symptomatic aortic stenosis due to degeneration of a prior transcatheter valve. CT demonstrated leaflet calcification with borderline left-sided valve-to-coronary distance (3.27 mm). Geometric assessment suggested low right coronary obstruction risk, but higher left main risk. Computational modeling demonstrated adequate leaflet-coronary clearance (distance from displaced leaflet cusp to coronary ostium normalized to coronary diameter >0.7). Redo TAVR with a 26-mm Evolut FX was performed without leaflet modification and no coronary obstruction.

Take-Home Message

Borderline CT findings in …

Recent Insight And Perspective Of Marine-Inspired Biopolymers For Wound Healing Applications - A Review, Muhammad Umar Aslam Khan, Saiqa Yousaf, Abdalla Abdal-Hay, Mohd Faizal Bin Abdullah, Sahar Madani, Muhammad Shahzad Zafar, Goran M. Stojanović, Lobat Tayebi

Electrical & Computer Engineering Faculty Publications

There is an increasing necessity for advanced, sustainable, and biocompatible materials for wound healing as therapeutic and diagnostic products. Marine environments, characterized by high biodiversity, offer an underutilized source of natural resources with enormous potential for creating novel materials for dressings. This review highlights the revolutionary nature of polymeric biomaterials of marine origin, with a focus on polysaccharides, like alginate, chitosan, and carrageenan; proteins, such as collagen and gelatin. These biopolymers are outstanding in their physicochemical properties, such as biodegradability, bioactivity, and modifiable mechanical strength, which enable their use in wound-healing systems. Besides, these biomaterials may be easily chemically and …

Pin-Plane Electrical Discharge Driven By A Mosfet Dc Current Source, Myles Perry, Sidmar Holoman, Daniel Wozniak, Shirshak Kumar Dhali

Electrical & Computer Engineering Faculty Publications

The generation of atmospheric pressure nonequilibrium plasma using electrical discharges is an active area of research due to its significance in a wide spectrum of applications including medicine, combustion, and manufacturing. In our attempt to create a helium plasma jet in a pin-plane discharge with a constant current source, we observed self-pulsating behavior. We present the results of the electrical, optical, and spectroscopic measurements carried out to characterize the discharge. The duration of the discharge is a few tens of nanoseconds, and the repetition rate is in the few tens of kHz. The effect of the gap distance and gas …

Multimodal Machine Learning For Alzheimer's Disease Classification Using Adni Biomarker Fusion, Hesameddin Mostaghimi, Hamid R. Okhravi, Bahar Niknejad, Daniel A. Cohen, Michel A. Audette, Alzheimer's Disease Neuroimaging Initiative

Electrical & Computer Engineering Faculty Publications

Despite ongoing advances, accurate diagnosis of Alzheimer’s disease (AD) remains challenging due to its multifactorial nature, comorbidities, and clinical heterogeneity. Accordingly, approaches that combine multimodal data may improve AD classification by integrating complementary information. To investigate this, we evaluated classification performance using a preprocessed ADNI-3 dataset comprising a shared set of clinical/cognitive features along with four imaging modality-based cohorts: trimodal (MRI + amyloid PET + tau PET), MRI + amyloid PET, MRI + tau PET, and MRI-only. We trained a range of supervised machine learning (ML) and deep learning (DL) classifiers using stratified five-fold cross-validation and evaluated performance using accuracy, …

A Mass Cytometry-Based Blood Cell Phenotyping Workflow Enabling Inclusion Of Resource-Limited And Rural Sites In Immune System Studies, Natalie J. Smith, Michael Cohen, Lauren Tracey, Julie Alipaz, Christina Loh, David King, Neha Pulyani, Rebecca Auzins, Elin Gray, Sandra Taylor, Rajat Rai, Steven Kao, Barbara Fazekas De St Groth, Helen M. Mcguire

Research outputs 2022 to 2026

Insight into disease detection and treatment through comprehensive immune phenotyping relies on the generation of high-quality data. However, the execution of robust immune monitoring in clinical trials by flow cytometry is complex due to logistical challenges in sample preparation and reagent stability. These challenges are exacerbated when considering remote and rural communities in Australia, which are burdened by both an increased prevalence and a worse prognosis of many chronic and infectious pathologies. This is not unique to the Australian context as globally remote and rural communities are underrepresented in biomedical research studies, contributing to persistent health inequities. To address these …

The Crucial Role Of Machine Learning Models In Predicting Current Childhood Asthma: Model Comparison, Calibration, And Shap-Based Interpretation, Aditya Chakraborty, A. K.M. Raquibul Bashar

Epidemiology, Biostatistics, & Environmental Health Faculty Publications

Background: Asthma is one of the most prominent chronic diseases in children and one of the most challenging ailments to diagnose in infants and preschoolers in the United States. Predictive models can be instrumental in improving early diagnosis, personalized treatment strategies, and disease progression. By utilizing nationalized data, this study focuses on building and comparing high-performing analytical predictive models based on the relevant risk factors and identifying the most influential predictors.

Methods: We analyzed cross-sectional BRFSS Asthma Call-Back Survey data (2011-2020; N = 9,813) and randomly split participants into training and testing sets. An XGBoost model (hyperparameters tuned via grid …

Microarray Analysis Of Human Abdominal Aortic Aneurysm With Emphasis On Cardiovascular Genes Revealed Differentially Expressed Genes, Song Lu, Li Ping Li, John V. White, Xiaoying Zhang, Ifeyinwa Nwaneshiudu, Adaobi Nwaneshiudu, Nectaria Ntaoula, John Gaughan, Dimitri S. Monos, Wan-Lu Lin, Charalambos C. Solomides, Emilia L. Oleszak, Chris D. Platsoucas

Biological Sciences Faculty Publications

Background/Aim: We examined gene expression profiles in abdominal aortic aneurysm (AAA) lesions vs. normal aortas by cDNA microarray and real-time quantitative reverse-transcriptase polymerase chain reaction (qRT-PCR).

Materials and Methods: Phosphorus (32P)-labeled cDNA from AAA specimens (mean AAA size 6.65 cm) and normal aortas were hybridized with a 588-gene microarray primarily of the cardiovascular system. The results were validated by qRT-PCR.

Results: A total of 35 out of the 588 genes were differentially expressed, with either log2 ratio of AAAs/controls ≥1 (upregulated; 20 genes) or ≤−1 (downregulated; 15 genes) in AAA lesions vs. normal aorta, and 25 of these were significantly …

All-Inside Arthroscopic Technique For Repairing Radial Meniscus Tears At The Anterior Horn-Body Junction, Brandon Omari Boyd, Robert M. Walker, Harrison A. Volaski, Ferdinand J. Chan

Department of Medicine Faculty Publications

Radial meniscus tears are a common tear pattern that, if left untreated, can ultimately lead to accelerated degenerative changes and disability. There is well-established evidence that supports meniscal preservation in patients with radial meniscus tears. Various surgical techniques are used to repair radial tears, including inside-out, outside-in, and all-inside methods. Self-retrieving all-inside devices are a safe option when repairing radial tears. However, radial tears at the junction of the anterior horn and body present a unique surgical challenge, as surgeons may have difficulty maneuvering the jaws of the self-retrieving suture device around the anterior limb of the meniscal tear. We …

Maxgrnet: A Multi-Axis Vision Transformer With Improved Generalization For Eye Disease Classification Using Explainable Ai With Insertion-Deletion Operations On Fundus Images, Md Mehedi Hasan Santo, Fuyad Hasan Bhoyan, Fuad Ibne Jashim Farhad, Fahmid Al Farid, Sovon Chakraborty, Md Humaion Kabir Mehedi, Jia Uddin, Hezerul Bin Abdul Karim

Computer Science Faculty Publications

Eye diseases, including diabetic retinopathy (DR), glaucoma, and cataracts, represent a major global health concern and can lead to severe visual impairment or blindness if not identified in a timely manner. This study proposes a novel eye disease classification framework based on a multi-axis vision transformer (MaxViT) applied to color fundus images with Explainable Artificial Intelligence (XAI) techniques to enhance model transparency. The proposed architecture integrates transformer-based attention mechanisms with Global Response Normalization (GRN)-based multi-layer perceptron (MLP) layers to capture complex spatial and contextual relationships within fundus images effectively. The model was evaluated on a publicly available eye disease classification …

Privacy-Preserving Federated Learning With Optimized Ensemble Weighting And Knowledge Distillation For Covid-19 Detection From Non-Iid Medical Imaging Data, Richard Annan, Hong Qin, Robert Newman, Madhuri Siddula, Letu Qingge

Computer Science Faculty Publications

Medical imaging enables rapid and accurate diagnosis of COVID-19, with CT scans proving especially effective. However, data privacy concerns limit collaborative model development across hospitals. To address this issue, we introduce a novel federated learning framework. It is referred to as Independent Knowledge Distillation with post-Ensemble Federated Learning (IKDEFL). Differential Privacy (DP) is integrated into the framework to improve privacy guarantees. Three DP mechanisms are evaluated. These include Fixed Gaussian, Gaussian Adaptive, and Tree Adaptive. The evaluation has been conducted on heterogeneous and Non-Independent and Identically Distributed (Non-IID) datasets. These datasets reflect real-world hospital scenarios. Results show that IKDEFL significantly …