Publications by authors named "Marcus Tan"

Prcis: In this retrospective cohort study, the 1-year cumulative probability of failure was comparable, achieving 52.20% in the phacoemulsification-iStent inject W (phaco/iStent) group and 47.80% in the phacoemulsification-micropulse transscleral laser therapy (phaco/MPTLT) group (P=0.

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Introduction: Disadvantaged socioeconomic status (SES) are linked with adverse cognitive outcomes in ageing and heightened dementia risk. Few studies have examined relationships between life course SES and adult structural brain changes that may be associated with cognitive decline.

Aims: This systematic review assesses evidence from neuroimaging based epidemiological studies that have explored relationships between life course SES and adult structural brain changes.

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Headache accompanied by eosinophilia in blood or CSF presents a complex clinical challenge. We present a case of a 26-year-old woman with headache, peripheral eosinophilia with meningeal enhancement, and intracranial vasculopathy on imaging. This case illustrates a systematic approach to a patient with meningitis, peripheral eosinophilia, and cerebral vasculitis, which includes comprehensive clinical history taking and appropriate investigative workup to differentiate between infectious and noninfectious causes and timely tissue sampling to conclusively determine the causative agent.

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Cartilage repair remains a significant challenge due to the tissue's limited innate regenerative capacity. Despite advances in techniques such as microfracture, autologous chondrocyte implantation (ACI), and osteochondral grafting, long-term outcomes are often compromised by complications, including suboptimal tissue integration, graft resorption, and mechanical instability. Recently, biologically augmented scaffold-based cartilage repair has emerged as a promising approach for full-thickness osteochondral lesions.

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Background: Rosacea is a chronic, relapsing inflammatory dermatosis predominantly affecting the central face and can result in significant psychosocial impacts. Isotretinoin has been studied for rosacea due to its anti-inflammatory and sebum reduction properties, but its use remains limited likely due to its off-label use and potential adverse events.

Objective: This systematic review and meta-analysis investigated the efficacy and safety of low-dose isotretinoin (LDI; ≤0.

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Objective: The aim of this study was to evaluate the accuracy, comprehensiveness, and safety of a publicly available large language model (LLM)-ChatGPT in the sub-domain of glaucoma.

Design: Evaluation of diagnostic test or technology.

Subjects Participants And/or Controls: We seek to evaluate the responses of an artificial intelligence chatbot ChatGPT (version GPT-3.

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Article Synopsis
  • This study investigates the genetic factors influencing pancreatic adenocarcinoma (PDAC) risk and its relationship with type 2 diabetes (T2D) and venous thromboembolism (VTE).
  • It analyzed data from 8,803 PDAC patients and 67,523 controls, using genetic analysis to identify 16 associated genes, including six novel ones.
  • Findings suggest that specific genes (HNF4G and PDX1) may link PDAC to T2D, while ABO may indicate a causal relationship of VTE affecting PDAC, calling for more research on these genetic influences.
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The use of endoscopic retrograde cholangiography (ERCP) for diagnostic and therapeutic interventions on the pancreaticobiliary system has steadily increased, but the standard approach through the oropharynx is prohibited after Roux-en-Y (RYGB) gastric bypass surgery. Laparoscopic access to the gastric remnant allows for the completion of ERCP using the standard side-viewing duodenoscope to facilitate the completion of standard and advanced endoscopic maneuvers. Here, we describe our experience with the technical aspects of safe and effective performance of laparoscopic-assisted ERCP.

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Individuals with chronic spontaneous urticaria (CSU) experience significant sleep disturbances and are at risk of anxiety and depression.

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Prcis: In our case series, the 3-year failure for Paul Glaucoma Implant (PGI) implantation was 14.6%. At 3 years postoperatively, there was a significant reduction in mean intraocular pressure (IOP) and the number of glaucoma medications used.

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Article Synopsis
  • Intraductal Papillary Mucinous Neoplasms (IPMNs) are identified as precursors to pancreatic cancer, and this study explores their connection to pyloric markers and their molecular drivers.
  • The research involved analyzing RNA sequencing data from IPMNs and validating findings through immunostaining in patient samples, revealing that certain oncogenes influence the expression of pyloric markers.
  • Key transcription factors such as SPDEF were identified as playing a crucial role in driving the mucinous characteristics of IPMNs, indicating a potential link between these lesions and gastric epithelial changes.
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Pyoderma gangrenosum is a rare neutrophilic dermatosis that results in painful cutaneous ulcers and is frequently associated with underlying hematologic disorders, inflammatory bowel disease, or other autoimmune disorders. Pathogenesis involves an imbalance between proinflammatory and anti-inflammatory mediators, leading to tissue damage from neutrophils. First-line treatment options with the greatest evidence include systemic corticosteroids, cyclosporine, and tumor necrosis factor alpha inhibitors.

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Background & Aims: Gastric carcinogenesis develops within a sequential carcinogenic cascade from precancerous metaplasia to dysplasia and adenocarcinoma, and oncogenic gene activation can drive the process. Metabolic reprogramming is considered a key mechanism for cancer cell growth and proliferation. However, how metabolic changes contribute to the progression of metaplasia to dysplasia remains unclear.

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