An assessment of a 3D EPID-based dosimetry system using conventional two- and three-dimensional detectors for VMAT.

Purpose: To provide a 3D dosimetric evaluation of a commercial portal dosimetry system using 2D/3D detectors under ideal conditions using VMAT.

Methods: A 2D ion chamber array, radiochromic film and gel dosimeter were utilised to provide a dosimetric evaluation of transit phantom and pre-treatment 'fluence' EPID back-projected dose distributions for a standard VMAT plan. In-house 2D and 3D gamma methods compared pass statistics relative to each dosimeter and TPS dose distributions.

Paired Ear Creases of the Helix (PECH): A Possible Physical Sign.

Diagonal ear lobe creases, often known as Frank's sign, are a folding in the skin of the ear lobe. Many studies have found an association between diagonal ear lobe creases and coronary artery disease. To our knowledge, this is the first report of paired ear creases of the helix.

Central round block repair of large breast resection defects: oncologic and aesthetic outcomes.

Background: The central round block repair is a volume displacement technique to reconstruct large wide local excision (WLE) defects in breasts with moderate ptosis or hypertrophy. There are limited published data on the outcomes of this technique.

Methods: Data were collected prospectively for 57 consecutive patients and follow up information obtained from patient records.

Solutions for managing variability in non-invasive brain stimulation studies.

In the last three decades, a number of non-invasive brain stimulation (NIBS) protocols, capable of assessing and modulating plasticity in the human motor cortex (M1), have been described. For almost as long, NIBS has delivered the tantalising prospect of non-invasive neuromodulation as a therapeutic intervention for neurorehabilitation, psychiatry, chronic pain and other disease states. Apart from modest effects in depression, this early promise has not been realised since the symptomatic improvements produced by NIBS are generally weak.

Variability in non-invasive brain stimulation studies: Reasons and results.

Non-invasive brain stimulation techniques (NIBS), such as Theta Burst Stimulation (TBS), Paired Associative Stimulation (PAS) and transcranial Direct Current Stimulation (tDCS), are widely used to probe plasticity in the human motor cortex (M1). Although TBS, PAS and tDCS differ in terms of physiological mechanisms responsible for experimentally-induced cortical plasticity, they all share the ability to elicit long-term potentiation (LTP) and depression (LTD) in M1. However, NIBS techniques are all affected by relevant variability in intra- and inter-subject responses.

Low-Dose Insulin as an Antiscarring Therapy in Breast Surgery: A Randomized Controlled Trial.

Background: The role of insulin in expediting wound healing is firmly established within the context of major trauma and burns; however, only limited clinical evidence exists as to its effects on scar formation. This study aims to build on previous laboratory work to examine the potential antiscarring properties of insulin in a clinical environment.

Methods: Ninety-one patients undergoing bilateral aesthetic breast operations were recruited to receive low-dose insulin and placebo injections to the medial 3 cm of their submammary incisions within the context of a randomized, intrapatient, placebo-controlled trial, and scar quality was assessed at 3-, 6-, and 12-month reviews using the Manchester Scar Scale.

Coil embolization for intrahepatic haemorrhage following liver biopsy in a patient with hepatitis C virus infection and hepatic microaneurysms.

Intrahepatic bleeding secondary to rupture of hepatic microaneurysms is an uncommon clinical entity more frequently associated with polyarteritis nodosa (PAN) or rarely with other vasculitis or autoimmune disease. Hepatic vasculitis is reported in chronic hepatitis C virus (HCV) infection and an association between hepatitis C and PAN is described. The current report presents the case of a middle-aged female patient with a medical history remarkable for HCV infection who underwent a percutaneous liver biopsy, which was complicated by severe intrahepatic and perihepatic haemorrhage.

The significance of circadian rhythms and dysrhythmias in critical illness.

Many physiological and cellular processes cycle with time, with the period between one peak and the next being roughly equal to 24 h. These circadian rhythms underlie 'permissive homeostasis', whereby anticipation of periods of increased energy demand or stress may enhance the function of individual cells, organ systems or whole organisms. Many physiological variables related to survival during critical illness have a circadian rhythm, including the sleep/wake cycle, haemodynamic and respiratory indices, immunity and coagulation, but their clinical significance remains underappreciated.

Use of acellular dermal matrix (ADM) in nipple reconstruction: the 'central-pillar technique'.

Nipple reconstructions are prone to a variable and unpredictable degree of flattening, which in some cases lead to secondary reconstruction. The use of an acellular dermal matrix (ADM) augmentation may be appropriate in cases with very thin dermis that are particularly prone to flattening or in revision cases where the first procedure has already failed. The authors present a series of 13 nipple reconstructions in ten cases.

Development and validation of a tool for non-technical skills evaluation in robotic surgery-the ICARS system.

Background: Non-technical skills (NTS) are being increasingly recognised as vital for safe surgical practice. Numerous NTS rating systems have been developed to support effective training and assessment. Yet despite the additional challenges posed by robotic surgery, no NTS rating systems have been developed for this unique surgical environment.

Environmental Tobacco Exposure and Urinary Cotinine Levels in Smoking and Nonsmoking Adolescents.

Objective: We aimed to evaluate the association between environmental tobacco smoke (ETS) exposure and urinary cotinine levels in current adolescent smokers and nonsmokers. The secondary objective was to explore the association between ETS exposure and nicotine dependence in adolescent smokers.

Methods: Using the results from a validation study for the 2012 Global Youth Tobacco Survey in Mexico, we quantified urinary cotinine levels in adolescent smokers and nonsmokers.

Azithromycin-induced cholestatic hepatitis.

Since its introduction >20 years ago, Azithromycin has been widely used owing to its broad spectrum and good tolerability, especially when used for <7 days. In literature, there are only very few, sporadic reports available of patients developing cholestatic hepatitis following treatment with it. The current case study describes a 69-year old patient, with a medical history that included significant alcohol consumption, who presented with jaundice following a 3-day course of Azithromycin.

Intra-operative techniques to reduce the risk of capsular contracture in patients undergoing aesthetic breast augmentation - A review.

Background: Capsular contracture is a significant complication following aesthetic breast augmentation. Efforts to reduce this incidence have focused on the surgical approach, implant selection and IV antibiotics. Intra-operative methods to reduce the risk have had less investigation.

Partial Resurfacing of the Knee with the BioPoly Implant: Interim Report at 2 Years.

Background: Current treatments for focal chondral and osteochondral lesions of the femoral condyle have been associated with variable outcomes. We conducted a clinical trial of the BioPoly RS Partial Resurfacing Knee Implant to address this unmet need.

Methods: We performed a single-arm, prospective study in which 33 patients with focal cartilage lesions affecting the femoral condyle were managed with the BioPoly RS Partial Resurfacing Knee Implant.

Successful outcomes following transforaminal epidural steroid injections for C4/5 cervical disc prolapse associated with profound neurological deficit.

Purpose: To show that with C5 radiculopathy and profound neurological deficit, good outcomes can be obtained with injection therapy.

Method: We present two cases of cervical radiculopathy secondary to disc prolapse associated with profound neurological deficit. In both cases, cervical injection therapy was used as the primary management.

Competency based training in robotic surgery: benchmark scores for virtual reality robotic simulation.

Objectives: To develop benchmark scores of competency for use within a competency based virtual reality (VR) robotic training curriculum.

Subjects And Methods: This longitudinal, observational study analysed results from nine European Association of Urology hands-on-training courses in VR simulation. In all, 223 participants ranging from novice to expert robotic surgeons completed 1565 exercises.

Detrusor overactivity increases bladder wall thickness in male patients: A urodynamic multicenter cohort study.

Aims: To evaluate the role of Bladder wall thickness (BWT) as a predictor of Detrusor overactivity (DO) in patients with Lower urinary tract symptoms (LUTS)/Benign prostatic enlargement without Bladder Outlet Obstruction.

Methods: From January 1996 to December 2000, each new patient, aged 45 years or older with LUTS, underwent standard diagnostic assessment, urodynamic studies (cystometry and pressure flow studies), and ultrasound measurements of the bladder wall thickness (BWT) in two centers. In order to exclude the possible effect of benign prostatic obstruction (BPO) on detrusor thickness, patients with a Schaefer class was ≥2 were excluded from the study.

Increased carcinoembryonic antigen (CEA) following neoadjuvant chemotherapy predicts poor prognosis in patients that undergo hepatectomy for liver-only colorectal metastases.

Background: The importance of preoperative chemotherapy in a multimodality management of patients with colorectal liver metastases (CRLM) has been demonstrated. We analyse the carcinoembryonic antigen (CEA) changes following neoadjuvant chemotherapy in patients with CRLM who underwent liver resection.

Methods: The final cohort included 107 eligible patients.

Blood-Based Biomarker Candidates of Cerebral Amyloid Using PiB PET in Non-Demented Elderly.

Increasingly, clinical trials for Alzheimer's disease (AD) are being conducted earlier in the disease phase and with biomarker confirmation using in vivo amyloid PET imaging or CSF tau and Aβ measures to quantify pathology. However, making such a pre-clinical AD diagnosis is relatively costly and the screening failure rate is likely to be high. Having a blood-based marker that would reduce such costs and accelerate clinical trials through identifying potential participants with likely pre-clinical AD would be a substantial advance.

Two cases of gallbladder metastasis from renal cell carcinoma and review of literature.

Background: Renal cell carcinoma accounts for 90% of renal neoplasms and metastatic disease is common. One third of newly diagnosed cases will have synchronous metastases at diagnosis and further 25-50 % will develop metachronous disease.

Case Presentation: This study presents two new cases of gallbladder metastasis from renal cell carcinoma (RCC) from our institution and reviews the published literature.

Association of Macroeconomic Factors With Nonrelapse Mortality After Allogeneic Hematopoietic Cell Transplantation for Adults With Acute Lymphoblastic Leukemia: An Analysis From the Acute Leukemia Working Party of the EBMT.

Purpose: From a global perspective, the rates of allogeneic hematopoietic cell transplantation (alloHCT) are closely related to the economic status of a country. However, a potential association with outcome has not yet been documented. The goal of this study was to evaluate effects of health care expenditure (HCE), Human Development Index (HDI), team density, and center experience on nonrelapse mortality (NRM) after HLA-matched sibling alloHCT for adults with acute lymphoblastic leukemia (ALL).