Publications by authors named "Leach P"

Purpose: This study presents a series of paediatric meningiomas and discusses aetiology, risk factors and outcomes with comparison to current literature.

Methods: This is a retrospective review of surgically treated paediatric meningiomas from three UK centres: the University Hospital of Wales, Alder Hey Children's Hospital and Royal Manchester Children's Hospital. Twenty-seven patients aged 16 and under at the time of their first procedure were identified over a 15-year period (1 January 2007 and 1 March 2023).

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Introduction: Growing skull fractures are a rare complication of paediatric skull fractures. Despite its rarity, a large proportion of resources go towards detecting this complication. This study aims to identify the factors associated with growing skull fracture development to determine which children require follow-up.

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Objective: This study aimed to evaluate the demographics and outcomes of major paediatric head trauma managed in our Paediatric Intensive Care Unit (PICU) in South Wales and comparison is made with the existing published literature.

Design And Setting: A retrospective review of medical records and imaging of patients identified from the paediatric neurosurgical trauma database at University Hospital Wales (UHW) from March 2013 to July 2021. We assessed the GCS at admission, mechanism of injury, CT scan, type of surgery required and GOS after 12 months.

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Purpose: We present our analysis of the existing Paediatric High Dependency Unit (HDU) admission policy at our institution and discuss our thoughts for its revision in the context of paediatric supratentorial tumour surgery.

Materials And Methods: We screened our prospectively maintained database of all children undergoing supratentorial craniotomy for resection of paediatric brain tumours over a fifteen-year period. The post-operative course of each patient was reviewed, assessing the number of patients who had true HDU needs in the immediate post-operative period, and the relative depth of input from paediatric HDU specialists that each patient received.

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Dermoid cysts are ectodermal inclusion lesions which can occur at the bregma, preventing complete closure of the anterior fontanelle. Various management strategies have been suggested for children presenting with such lesions. We describe the experience of managing a series of 13 consecutive patients at the University Hospital of Wales, Cardiff, including pre-operative workup, operative strategy, post operative care and follow up.

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Trading partners often require phytosanitary or quarantine treatments for fresh horticultural produce to ensure no economically important pest species are moved with the imported product. When developing such treatments, it is essential that the level of treatment efficacy can be determined. This is often based on the mortality of the total number of target pests exposed to treatment, but in naturally infested products this number is not always known.

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Objectives: Transferring paediatric patients with suspected abusive head trauma (AHT) to paediatric neurosurgical centres, disrupts safeguarding investigations. Therefore, it is desirable that suspected AHTs are transferred only when clinically necessary. The aim of this study was to describe referral patterns of patients referred to a tertiary paediatric neurosurgical centre with suspected AHT, with the view of informing future transfer of AHT patients.

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The genus (Diptera: Tephritidae) is endemic to the monsoonal rainforests of South-east Asia and the western Pacific where the larvae breed in ripe, fleshy fruits. While most remain rainforest restricted, species such as , and are internationally significant pests of horticulture, being both highly invasive and highly polyphagous. Almost universally in the literature it is assumed that breed continuously if temperature and hosts are not limiting.

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Background: The thiopurine medications are well established in the treatment of inflammatory bowel disease (IBD). There is significant variation in levels of toxic and therapeutic metabolites. Current data from small or short-term studies support therapeutic drug monitoring (TDM) in assessing azathioprine (AZA) and 6-mercaptopurine (6MP).

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Introduction: Posterior fossa (PF) tumours are associated with vasogenic oedema causing symptoms of raised intracranial pressure. Preoperatively this is managed with dexamethasone. To minimise steroid related complications, the lowest effective dose should be administered.

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Background: Intracranial arachnoid cysts (AC) are benign, cerebrospinal fluid filled spaces within the arachnoid layer of the meninges. Neurosurgical intervention in children and young adults has been extensively studied, but the optimal strategy in the elderly remains unclear. Therefore, we performed a single center retrospective study combined with a systematic review of the literature to compare cystoperitoneal (CP) shunting with other surgical approaches in the elderly cohort.

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Background: To evaluate the surgical outcomes of arachnoid cyst decompression in patients less than 16 years of age with an associated neurodevelopmental disorder (NDD).

Methods: A retrospective analysis of surgically treated congenital arachnoid cyst within South Wales between 2010-2019. Surgical outcomes are measured according to clinical (COG; clinical outcome score) and radiological (NOG; neuroimaging outcome score) outcomes and the complication profiles are described.

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The COVID-19 pandemic has had widespread consequences on health care systems around the world. It resulted in extensive changes to the referral patterns, management, and rehabilitation of surgical conditions. We aimed to evaluate the effect the COVID-19 pandemic has had on traumatic brain injury (TBI) specifically.

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Objectives: The aim of this study was to explore the rates and potential risks of surgical site infection (SSI) after posterior fossa surgery for tumour resection in children.

Methods: We retrospectively reviewed our local paediatric (age < 16 years) database for all cases of posterior fossa (PF) brain tumour surgery between November 2008 and November 2019. We collected patient demographics, tumour histology/location, and the event of postoperative surgical site infection.

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Objective: We aim to evaluate whether intraoperative cerebrospinal fluid (CSF) sampling during ventriculo-peritoneal (VP) shunt insertion can predict future VP shunt infection or guide its management.

Methods: 83 paediatric patients undergoing VP shunt insertion between February 2013 and July 2019 were retrospectively identified. Patient demographics, presence of pre-operative extra ventricular drain (EVD), pre-operative CSF results, and intra-operative CSF results were identified from patient case notes and electronic clinical databases.

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Background: Hypertrophic olivary degeneration is a rare condition caused by damage within the triangle of Guillain and Mollaret. We discuss the anatomical, radiological, and clinical history of this rare condition.

Case Description: A 32-year-old lady presented with sub-acute headache, photophobia, and dizziness.

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Incidental soft tissue lumps in the scalp are a common presenting complaint in clinical practice. However, they may signify more sinister underlying pathologies. Our report examines a 63-year-old man presenting with impaired co-ordination in his left hand following a 3-month history of a painless left retroauricular scalp lump.

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Introduction: Preoperative hair removal is conventional practice within neurosurgery in an attempt to maintain antisepsis. However, there is a lack of evidence to suggest that it makes a difference with regards to infection. This article aims to relate preoperative hair removal to SSIs for paediatric patients.

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Introduction: Spontaneous central nervous system (CNS) infections in children are rare. Treatment involves surgical intervention and antibiotic therapy. We describe a single centre experience of managing this condition in South Wales.

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Background: Paediatric brain tumour resection rates have been shown to correlate with outcome and, it is argued, are linked to operator volume and caseload. The British paediatric neurosurgery community has previously debated centralisation of paediatric neuro-oncology. At the 2018 British Paediatric Neurosurgery Group (BPNG) meeting, a commitment was made to prospectively collect tumour resection data at each Neurosurgical Unit (NSU).

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Purpose: Congenital dermal sinuses are a rare form of spinal dysraphism. The developmental defects are located along the midline neuroaxis, with sinuses in the cervical region being the least common. Congenital dermal sinuses can be associated with intraspinal infection as they act as a direct route from the skin and subcutaneous tissues into the spinal cord.

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Introduction: Predictive factors for post-traumatic hydrocephalus (PTH) in adults have been elucidated but remain uncertain for children. We aimed to identify the prevalence of PTH in paediatric patients and identify clinical/radiological factors which may increase the probability of children developing PTH.

Methods: This was a retrospective study of all patients < 16 years old admitted to our unit with traumatic brain injury (TBI) between March 2013 and June 2018, 108 patients in total.

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Purpose: Hydrocephalus is a major cause of morbidity in the pediatric population, with potentially severe consequences if left untreated. Two viable strategies for management of non-communicating hydrocephalus are endoscopic third ventriculostomy (ETV) and ventriculoperitoneal shunting. However, there is uncertainty over the safety and efficacy of ETV in younger infants aged 1 year or below.

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Background: Management of children with disorders of cerebrospinal fluid (CSF) circulation is a common aspect of paediatric neurosurgical practice. Sport and physical activity play an integral role in the lives of patients in this age group. However, there is little evidence to support the dissemination of appropriate advice to children regarding such activities.

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