Publications by authors named "Simon Scheck"

Article Synopsis
  • - Endometriosis is a common condition that typically requires surgery for diagnosis, indicating a need for non-invasive biomarkers, such as extracellular vesicles (EVs), though research on EVs in this context is limited.
  • - This study explored how effective it is to isolate EVs from cervico-vaginal fluid using cervical brushes and vaginal swabs, finding that both methods yield intact vesicles with some contaminants, but cervical brushes produced higher particle concentrations.
  • - While both sampling techniques showed similar levels of protein and miRNA, the overall EV yield was low, suggesting that either method could potentially be used for future biomarker research in endometriosis.
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Article Synopsis
  • * A notable test emerging in Europe uses machine learning to analyze microRNAs from a study involving 200 patients suspected of having endometriosis.
  • * Caution is advised against using this test outside of research settings, as several unanswered questions remain regarding its validity and application.
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Introduction: Endometriosis is an under-researched disease, with Aotearoa-specific data severely lacking. Current estimates of parameters such as rates of endometriosis diagnosis, indication for surgery and sites of disease are based on international data. There is currently no published data on endometriosis surgeries in Aotearoa New Zealand.

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Aim: Despite increasing interest in reduction of surgical site infection (SSI) after caesarean section, there is limited evidence around optimal dressing choice. We report the experience of a secondary hospital in regional New Zealand changing from a basic contact dressing to a hydrocolloid dressing over a three-month period, reporting SSI rates, midwifery and nursing experience, and cost.

Method: A retrospective cohort study of hydrocolloid dressings for caesarean sections over three months, compared with basic contact dressings in caesarean sections in the same period one year previously.

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Endometriosis is a chronic, inflammatory gynaecological disease that can have severe negative impacts on quality of life and fertility, placing burden on patients and the healthcare system. Due to the heterogeneous nature of endometriosis, and the lack of correlation between symptom and surgical disease severity, diagnosis and treatment remain a significant clinical challenge. Extracellular vesicles (EVs) are biologically active particles containing molecular cargo involved in intercellular communication, that can be exploited for diagnostic and therapeutic purposes.

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Aims: To evaluate the approach to diagnosis and management of caesarean scar pregnancy (CSP) at a regional New Zealand hospital.

Methods: A retrospective case series of ten patients between June 2015 and May 2020. The data review included demographic information, ultrasound findings, human chorionic gonadotropin (HCG) levels, primary and subsequent treatment, outcomes and complications.

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Background: Cervical smear cytology and colposcopic biopsy histology are prone to error at both collection and interpretation stages, leading to a large number of discordant cases.

Aims: Investigation of five-year outcomes for women who have cervical cytology that is discordant and higher grade than histology results.

Materials And Methods: A retrospective cohort study was carried out for 111 women with cervical cytology discordant and higher grade than histology, after cytopathological review, over a three-year period.

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Background: Cervical screening programs have had an important effect on the reduction of cervical cancer rates. Comprehensive programs require access to pathological review to improve the sensitivity of screening cytology and the specificity of diagnostic histology.

Aims: To determine the number of cases where cervical cytology or histology was amended at cytopathological review; whether amendments were 'upgrades' or 'downgrades', and how amendments aligned with follow-up results for these patients.

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Aim: The aim of this study was to determine the key influential factors for pregnant or recently pregnant women in deciding on influenza vaccination.

Method: This study was conducted in a single tertiary hospital in New Zealand using an anonymous and voluntary patient survey. Ethnicity, age and stage of pregnancy along with self-reported data on factors that influenced the decision to vaccinate against influenza during pregnancy were recorded.

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Aim: To define the range and severity of cardiac disease in pregnant women in New Zealand, as well as the maternal and neonatal morbidity and mortality compared with the background obstetric population.

Methods: We retrospectively audited pregnant women with cardiac comorbidity seen by a multidisciplinary team at a tertiary referral centre consisting of midwives, cardiologists, obstetricians and anaesthetists in 2016-2017.

Results: Seventy-two women were referred to the multidisciplinary team.

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Surgical site infection (SSI) following caesarean section is common, resulting in significant morbidity. Several factors are known to contribute to wound infection, including maternal, procedural and antibiotic factors. We sought to clarify these issues and sought opportunities to make improvements.

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Endometrioid carcinoma with a prominent squamous component has the ability to mimic pilomatrixoma. One previous case is documented of cutaneous metastasis in the upper limb derived from ovarian endometrioid carcinoma mimicking pilomatrixoma. Here, we describe a case of metastasis of endometrial endometrioid carcinoma in the distal vagina, treated with radiotherapy and later resected.

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Aims: To investigate the extent of white matter damage in children with unilateral cerebral palsy (UCP) caused by periventricular white matter lesions comparing between unilateral and bilateral lesions; and to investigate a relationship between white matter microstructure and hand function.

Methods And Procedures: Diffusion MRI images from 46 children with UCP and 18 children with typical development (CTD) were included. Subjects were grouped by side of hemiparesis and unilateral or bilateral lesions.

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In this work we investigate the structural connectivity of the anterior cingulate cortex (ACC) and its link with impaired executive function in children with unilateral cerebral palsy (UCP) due to periventricular white matter lesions. Fifty two children with UCP and 17 children with typical development participated in the study, and underwent diffusion and structural MRI. Five brain regions were identified for their high connectivity with the ACC using diffusion MRI fibre tractography: the superior frontal gyrus, medial orbitofrontal cortex, rostral middle frontal gyrus, precuneus and isthmus cingulate.

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We present a unique presentation of Crohn's disease in a 25-year-old male with a 3-month history of progressive gastric outlet obstruction symptoms including reflux, vomiting, postprandial pain and weight loss, with no other symptoms. Multiple imaging investigations as well as gastroscopic biopsies revealed a non-specific prepyloric lesion, without evidence of malignancy. A distal gastrectomy was performed.

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Aim: The aim of this study was to quantify grey matter changes in children with unilateral cerebral palsy (UCP), differentiating between cortical or deep grey matter (CDGM) lesions, periventricular white matter (PWM) lesions, and unilateral and bilateral lesions.

Method: In a cross-sectional study we obtained high resolution structural magnetic resonance images from 72 children (41 males, 31 females, mean age 10y 9mo [SD 3y 1mo], range 5y 1mo-17y 1mo) with UCP (33 left, 39 right hemiplegia; Manual Ability Classification System level I n=29, II n=43; Gross Motor Function Classification System level I n=46, II n=26), and 19 children with typical development (CTD; eight males, 11 females, mean age 11y 2mo [SD 2y 7mo], range 7y 8mo-16y 4mo). Images were classified by lesion type and analyzed using voxel-based morphometry (VBM) and subcortical volumetric analysis.

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Aim: Preterm birth is associated with an increased risk of adverse neurodevelopmental outcomes. Diffusion magnetic resonance imaging (dMRI) combined with tractography can be used to assess non-invasively white matter microstructure and brain development in preterm infants. Our aim was to conduct a systematic review of the current evidence obtained from tractography studies of preterm infants in whom MRI was performed up to term-equivalent age.

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Aim: Structural connectivity analysis using diffusion magnetic resonance imaging (dMRI) and tractography has become the method of choice for studying white matter pathology and reorganization in children with congenital hemiplegia. To evaluate its role in the research domain, we systematically reviewed the literature about children with cerebral palsy (CP) to document common findings and identify strengths and possible limitations of this neuroimaging technology.

Method: A literature search was performed for peer-reviewed studies pertaining to dMRI and CP.

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