Negative / Null Result ReportMedicine
Liu M, Kong L, Sun W et al. · 2026 · Journal of immunotherapy (Hagerstown, Md. : 1997)
To investigate the clinical profile of nivolumab-induced autoimmune hemolytic anemia (AIHA) and to reveal the diagnostic and therapeutic patterns of this disease. Articles on nivolumab-induced AIHA published before October 31, 2025 were…
View details →DOI: 10.1097/cji.0000000000000612 Negative / Null Result ReportMedicine
Costa M, Rodrigues P, Araújo B et al. · 2026 · Diagnostic microbiology and infectious disease
Cryptococcal meningitis is a life-threatening opportunistic infection in advanced HIV disease. Cryptococcal antigen (CrAg) detection by lateral flow assay (LFA) is the diagnostic cornerstone, offering high sensitivity and specificity.…
View details →DOI: 10.1016/j.diagmicrobio.2026.117512 Negative / Null Result ReportMedicine
Li QX, Luo LZ · 2026 · BMC infectious diseases
Background Cutaneous infections caused by non-tuberculous mycobacteria (NTM) are rare. Atypical clinical manifestations and the need for precise microbiological identification often result in misdiagnosis and underdiagnosis. Case…
View details →DOI: 10.1186/s12879-026-13549-3 Negative / Null Result ReportOpen accessMedicine
Gambuś K, Moszczyński K, Popovchenko S et al. · 2026 · Kardiochirurgia i torakochirurgia polska = Polish journal of cardio-thoracic surgery
Introduction Accurate assessment of mediastinal lymph node involvement is crucial for treatment planning in lung cancer. Combined endobronchial and endoscopic ultrasound (CUS) offers high sensitivity and negative predictive value (NPV),…
View details →DOI: 10.5114/kitp.2026.160677 Negative / Null Result Report
Alger JR, Gupta I, Farkouh L et al. · 2026 · Preprint
Background Prior neuroimaging suggests brain differences between children with attention deficit hyperactivity disorder due to prenatal alcohol exposure (ADHD+PAE) and non-exposed children with ADHD due to other, e.g., familial, causes…
View details →DOI: 10.64898/2026.05.25.26354065 Negative / Null Result ReportMedicine
Dellbrügge F, Schaumann N, Kruppa M et al. · 2026 · Pneumologie (Stuttgart, Germany)
Abstract We present the case of a 39-year-old Indian female patient diagnosed with tuberculous mastitis and lymph node tuberculosis. The patient had a history of tuberculosis infection treatment as a newborn. She initially presented with…
View details →DOI: 10.1055/a-2845-3440 Negative / Null Result ReportMedicine
Li X, Huang Y, Hao J et al. · 2026 · Current HIV research
Background Married Men who have Sex with Men (MSM) constitute a bridge population for HIV diffusion into low-risk groups, with spousal non-disclosure rates exceeding 60% in China. It will increase the risk of secondary transmission within…
View details →DOI: 10.2174/011570162x444930260409114355 Negative / Null Result ReportMedicine
Tsang SM, Merino Gutierrez V, Yu J et al. · 2026 · Veterinary sciences
Canine babesiosis caused by Babesia gibsoni is prevalent in Hong Kong. While molecular diagnosis via PCR is highly sensitive, it typically requires reference laboratory access, delaying clinical decisions. This study evaluated the…
View details →DOI: 10.3390/vetsci13060548 Negative / Null Result ReportMedicine
Hijaze E, Razi T, Arbel R et al. · 2026 · Journal of clinical rheumatology : practical reports on rheumatic & musculoskeletal diseases
Objective To evaluate the diagnostic performance of BioPlex 2200 multiplex immunoassay (BI) for detecting antinuclear antibodies (ANA), compared with the gold standard, the indirect immunofluorescence assay (IIF), as a screening…
View details →DOI: 10.1097/rhu.0000000000002372 Negative / Null Result ReportMedicine
Tri PM, Hung NT, Liet DH et al. · 2026 · Emergency radiology
Purpose To assess the diagnostic performance of computed tomography (CT) for predicting main pancreatic duct injury in surgically explored patients with distal pancreatic trauma. Methods We conducted a prospective single-center diagnostic…
View details →DOI: 10.1007/s10140-026-02504-z Negative / Null Result ReportMedicine
Wei XT, Zhu LY, Wu YL et al. · 2026 · Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi
Objective: To evaluate the screening performance and related factors of ultrasound for hepatic steatosis in community-based elderly populations using controlled attenuation parameter (CAP) measured by transient elastography as the…
View details →DOI: 10.3760/cma.j.cn112338-20250626-00436 Negative / Null Result Report
TEZCE A, DURMUŞ E · 2026 · Preprint
Abstract Purpose The objective of this study is to compare the diagnostic efficacy of Magnetic Resonance Imaging (MRI) and Computed Tomography (CT) in detecting lumbar spondylolysis among patients presenting with chronic low back pain, and…
View details →DOI: 10.21203/rs.3.rs-9247900/v1 Negative / Null Result Report
Livorsi DJ, Ritter S, Lund BC et al. · 2026 · Preprint
Abstract Background: The pneumococcal urinary antigen test can help rapidly identify Streptococcus pneumoniae as the cause of community-acquired pneumonia (CAP). In this study, we assessed the utility of this test across an integrated…
View details →DOI: 10.21203/rs.3.rs-9267869/v1 Negative / Null Result ReportOpen accessMedicine
Zorlutuna Kaymak N, Pekel İ, Demir Tekol S et al. · 2026 · BMC ophthalmology
Purpose To evaluate the diagnostic utility and real-world clinical impact of polymerase chain reaction (PCR) analysis of aqueous humor (AH) and vitreous samples in patients with uveitis including suspected infectious and mixed…
View details →DOI: 10.1186/s12886-026-05002-5 Negative / Null Result ReportMedicine
Genetic And Metabolic Disorders Screening Subgroup Of The Birth Defects Prevention And Control Committee Chinese Preventive Medicine Association, Rare Diseases Branch Of Shandong Medical Association, Genetic Metabolism Branch Of Shandong Provincial Rare Disease Association et al. · 2026 · Zhonghua yi xue yi chuan xue za zhi = Zhonghua yixue yichuanxue zazhi = Chinese journal of medical genetics
High-throughput sequencing technology has recently been used in neonatal disease screening. To address the issues related to the screening process, interpretation of screening results, and recall of positive cases in neonatal genetic…
View details →DOI: 10.3760/cma.j.cn511374-20250922-00559 Negative / Null Result ReportMedicine
Inácio ML, Rusinque L, Nóbrega F et al. · 2026 · Plant disease
Aphelenchoides besseyi , the causal agent of the white-tip disease, is a quarantine nematode known to affect rice ( Oryza sativa ) by colonizing leaf tips and panicles. In January 2021, A. besseyi was detected in Portugal in imported…
View details →DOI: 10.1094/pdis-07-25-1513-sc Negative / Null Result ReportMedicine
Goren T, Vashdi DR, Beeri I · 2026 · Social science & medicine (1982)
Political trust is considered crucial for enhancing civic compliance with government policies and instructions, particularly during a health crisis. However, evidence from the COVID-19 pandemic, a major global health crisis, suggest a more…
View details →DOI: 10.1016/j.socscimed.2026.119093 Negative / Null Result ReportMedicine
Mohanta S, Tye KM · 2025 · Neuron
In this issue of Neuron, Biane et al. 1 used cellular-resolution recordings in ventral CA1 (vCA1) to comprehensively establish that it encodes stimulus features and identity, but not a generalized abstraction of valence. This suggests a…
View details →DOI: 10.1016/j.neuron.2025.08.024 Negative / Null Result ReportMedicine
Zhou G, Dael N, Verweij S et al. · 2026 · Pharmaceuticals (Basel, Switzerland)
Background: The rapid emergence of immune-evasive SARS-CoV-2 variants necessitates the identification of accessible, low-cost prophylactic strategies. While drug repurposing offers a time-efficient alternative to novel drug development,…
View details →DOI: 10.3390/ph19060861 Negative / Null Result ReportMedicine
Brent DA · 2026 · Journal of the American Academy of Child and Adolescent Psychiatry
In this issue of JAACAP, Asarnow and colleagues report the results of their innovative, elegantly conducted clinical trial that assessed the added value of stratified, stepped care (SSC) for youth at risk for suicidal behavior in a health…
View details →DOI: 10.1016/j.jaac.2026.02.001 Negative / Null Result ReportMedicine
Haroon A, Almuhaideb A, Adeleke S et al. · 2026 · Nuclear medicine communications
Objective To assess the accuracy of 18F choline PET/magnetic resonance (MR) when compared with the reference standard MRI-guided template mapping (TPM) biopsies for evaluation of biochemical relapse of prostate cancer in patients with…
View details →DOI: 10.1097/mnm.0000000000002158 Negative / Null Result ReportOpen accessMedicine
Goldstein EL, Marcelo KR, Harjes WR et al. · 2025 · Emergency radiology
Purpose Controversy exists regarding analgesia premedication prior to right upper quadrant ultrasound (RUQUS) in the setting of abdominal pain when evaluating for acute cholecystitis (AC). The purpose of this study was to examine the…
View details →DOI: 10.1007/s10140-025-02387-6 Negative / Null Result ReportMedicine
Bafaraj SM · 2025 · Current problems in diagnostic radiology
The primary aim of this study is to assess how well ultrasonography and 99mTc-sestamibi scintigraphy perform as diagnostic tools for hyperparathyroidism (HPT) when compared to the clinical measurements of parathyroid hormone (PTH) levels.…
View details →DOI: 10.1067/j.cpradiol.2025.09.001 Negative / Null Result Report
Yanagihara K, Nagata K, Yamakawa T et al. · 2025 · Preprint
Backgrounds: . Programmed death-ligand 1 (PD-L1) immunohistochemistry (IHC) is a critical predictive biomarker for immune checkpoint inhibitor (ICI) therapy in triple-negative breast cancer (TNBC). However, prolonged storage of…
View details →DOI: 10.20944/preprints202508.1544.v1 Negative / Null Result ReportOpen accessMedicine
Obeidat A, Sabbah BN, Mandourah H et al. · 2025 · Annals of medicine and surgery (2012)
Introduction Testicular sperm extraction (TESE) is a common procedure for retrieving sperm in men with azoospermia. However, the success rates of a second TESE following an initial unsuccessful attempt remain low. This study aims to…
View details →DOI: 10.1097/ms9.0000000000003560 Negative / Null Result ReportMedicine
Olaniyan H, Beckman J, Crosby E et al. · 2026 · Clinica chimica acta; international journal of clinical chemistry
Objectives Timely and locally relevant drug testing is helpful for overdose assessment; however, immunoassay (IA)-based urine drug screens (UDS) often fail to detect emerging substances. This study assesses fentanyl screen utilization and…
View details →DOI: 10.1016/j.cca.2026.120948 Negative / Null Result ReportMedicine
Wang J, Jiang B · 2026 · Journal of infection in developing countries
Introduction Postoperative central nervous system (CNS) infections in craniotomy patients diagnosed through clinical signs and cerebrospinal fluid (CSF) bacterial culture, pose a challenge due to the morbidity and mortality of bacterial…
View details →DOI: 10.3855/jidc.21771 Negative / Null Result ReportMedicine
Nardy T, Rondinaud E, Dessajan J et al. · 2026 · International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases
Objectives This study assessed the clinical significance of negative BioFire® FilmArray® Pneumonia Panel (FA-PP) results in ICU patients with suspected hospital-acquired (HAP) or ventilator-associated pneumonia (VAP), evaluating its impact…
View details →DOI: 10.1016/j.ijid.2026.108665 Negative / Null Result ReportMedicine
Saito T, Namera A, Yamamoto R et al. · 2026 · The Journal of toxicological sciences
Zopiclone (ZOP) and eszopiclone (EZOP) are hypnotics belonging to the cyclopyrrolone class, which are metabolized to zopiclone-N-oxide (ZOPNO) and N-desmethylzopiclone (NDZOP), respectively, and finally to 2-amino-5-chloropyridine (2A5C)…
View details →DOI: 10.2131/jts.51.173 Negative / Null Result ReportMedicine
Pottenger LH, Banton M, Barranco WT et al. · 2026 · Journal of environmental science and health. Part C, Toxicology and carcinogenesis
Recent studies investigating mutagenic/cytogenetic effects of styrene and styrene-7,8-oxide (SO) were reviewed to update published critical evaluations of these data from 2019. Transcriptomics studies relevant to styrene/SO genotoxicity…
View details →DOI: 10.1080/26896583.2026.2623381 