Nitrous Oxide-Induced Vitamin B12 Deficiency and Myelopathy in Whippets Abusers: A Report of Two Cases.

Whippets abuse, prevalent among recreational drug users, poses significant health risks, particularly through the inactivation of vitamin B12 by nitrous oxide (NO). This deficiency can lead to myelopathy, resulting in serious neurological complications. We present two female patients, aged 22 and 35, with a history of regular whippet use over the past three years, who exhibited clinical symptoms of myelopathy, including motor weakness, rigidity, sensory changes, and gait abnormalities.

Identification of Malignancy in Peritumoral Edema in Soft Tissue Sarcoma: A Novel Targeted Molecular Approach.

Background: Peritumoral edema on staging magnetic resonance imaging (MRI) is associated with higher local recurrence in soft tissue sarcoma (STS). This may relate to the presence of satellite malignant cells that are difficult to distinguish from benign atypia, leading to over- or undertreatment. This study evaluated a novel targeted molecular approach to identify malignancy in STS peritumoral planes as a means to improve personalized care.

Curative-intent surgery for solitary bone metastasis from extremity and trunk wall sarcoma: What are the outcomes and complications?

Introduction: Approximately 40-50 % of sarcoma patients will develop lung metastasis, but only 10 % will develop bone metastasis. The survival benefit of surgery for solitary bone metastasis remains unclear.

Methods: From 1987 to 2019, 47 patients who underwent curative-intent treatment for localized bone or soft tissue sarcoma in the extremities or trunk wall developed solitary bone metastases as the first distant recurrence.

In vivo reflectance confocal microscopy role for early to advanced lentigo maligna melanoma spectrum: A systematic review and pooled analysis.

Lentigo maligna (LM) is a growing problem worldwide and the main type of melanoma in situ in some Caucasian populations. It presents as a spectrum from atypical intraepidermal melanocytic proliferation (AIMP) to invasive lentigo maligna melanoma (LMM). Accurate diagnosis and staging are crucial for determining appropriate management strategies.

Toxicity of microplastic fibers containing azobenzene disperse dyes to human lung epithelial cells cultured at an air-liquid interface.

There is growing concern surrounding the human health effects following inhalation exposure to microplastic fibers (MPFs). MPFs can harbor chemical additives, such as azobenzene disperse dyes (ADDs), that may contribute to their toxicity. The goal of this study was to determine the acute biological effects of dyed polyethylene terephthalate MPFs to fully differentiated normal human bronchial epithelial (NHBE) cells cultured at an air-liquid interface.

Pure Sensory Thalamic Stroke Presenting As Hemiballismus: A Case Report.

Strokes are a major cause of morbidity and mortality across the globe. An ischemic stroke of thalamic origin should be considered if a patient presents with a set of non-localizing symptoms such as speech issues, sensory abnormalities, chorea-like movements, ataxia and confusion that cannot be explained by a single lesion. A 78-year-old female with a past medical history of hypertension and smoking developed right-hand numbness and ataxia that progressively worsened to numbness of the entire right side of the body and right-arm hemiballismus.

Impact of Skin Care Products on Phthalates and Phthalate Replacements in Children: the ECHO-FGS.

Background: Phthalates and their replacements have been implicated as developmental toxicants. Young children may be exposed to phthalates/replacements when using skin care products (SCPs).

Objectives: Our objective is to assess the associations between use of SCPs and children's urinary phthalate/replacement metabolite concentrations.

Mapping the Course of Recovery Following Limb-Salvage Surgery for Soft-Tissue Sarcoma of the Extremities.

Background: Despite the goal of an acceptable functional result, the surgical treatment of soft-tissue sarcoma can portend a prolonged course of recovery. More comprehensive data on the expected course of recovery following extremity sarcoma surgery are needed to help to inform physicians and patients. The purpose of the present study was to describe the typical course of functional recovery following limb-salvage resection of a soft-tissue sarcoma and to identify factors associated with a delayed postoperative course of recovery.

Wristband Personal Passive Samplers and Suspect Screening Methods Highlight Gender Disparities in Chemical Exposures.

Wristband personal samplers enable human exposure assessments for a diverse range of chemical contaminants and exposure settings with a previously unattainable scale and cost-effectiveness. Paired with nontargeted analyses, wristbands can provide important exposure monitoring data to expand our understanding of the environmental exposome. Here, a custom scripted suspect screening workflow was developed in the R programming language for feature selection and chemical annotations using gas chromatography-high-resolution mass spectrometry data acquired from the analysis of wristband samples collected from five different cohorts.

Using Video-Reflexive Methods to Develop a Provider Down Protocol for the New South Wales Biocontainment Center.

The New South Wales Biocontainment Centre is a statewide referral facility for patients with high-consequence infectious disease (HCID). The facility collaborates with researchers to adapt existing HCID procedures such as donning and doffing of personal protective equipment (PPE). However, information on how to respond safely to collapse of a healthcare provider in full PPE within a contaminated zone is scarce.

Incidence and risk factors of complications during central venous access devices removal in children.

Purpose: To quantify the rates and identify risk factors for the complications of central venous access devices (CVADs) removal in children.

Method: Retrospective (2018-2023) review of children undergoing CVADs removal at a single institution. Data are reported as frequency, percentages and median.

The utility of intraoperative marrow margin frozen section in extremity bone sarcoma resection.

Background And Objectives: Intraoperative frozen section analysis is commonly used to evaluate marrow margins during extremity bone sarcoma resections, but its efficacy in the era of magnetic resonance imaging is debated. This study aimed to compare the accuracy of intraoperative frozen section assessment with final pathology, assess its correlation with gross intraoperative margin assessment, and evaluate its impact on surgical decision making.

Methods: Consecutive patients undergoing extremity bone sarcoma resections from 2010 to 2022 at a single sarcoma center were included.

Tranexamic acid use in sarcoma surgery patients: A systematic review and meta-analysis.

Introduction: Perioperative bleeding increases morbidity and mortality in sarcoma patients. Tranexamic acid (TXA), an antifibrinolytic, is widely utilized in non-sarcoma orthopaedic surgeries, but its adoption in sarcoma surgery is hindered by concerns about thrombotic events.

Methods: Searches in Ovid MEDLINE, EMBASE, and CENTRAL were performed without date restrictions.

Effect of N-acetylcysteine on neural alcohol cue reactivity and craving in adolescents who drink heavily: A preliminary randomized clinical trial.

Background: Alcohol craving is related to problematic alcohol use; therefore, pharmacotherapies that modulate alcohol craving are of interest. N-acetylcysteine, an over-the-counter antioxidant, is a candidate pharmacotherapy for adolescent alcohol use with the potential to impact craving. Cue-reactivity paradigms using functional magnetic resonance imaging (fMRI) can identify neural regions implicated in craving and serve as a screening tool for novel pharmacotherapy options.

Predictors of malignancy in melanocytic lesions presenting as new lesions compared to baseline total body photography: A case-control study.

Background: Only a small per cent of new melanocytic lesions developing in adults are expected to represent melanomas. Total body photography (TBP) has been widely incorporated in clinical practice, especially for follow-up of high-risk individuals with multiple naevi. However, dynamic changes detected with TBP need to be interpreted with caution to avoid unnecessary excisions.