Robotic-Assisted Laparoscopic Epiphrenic Esophageal Diverticulectomy with Myotomy.

Introduction: A large epiphrenic esophageal diverticulum can cause troublesome symptoms for patients, including dysphagia and reflux, ultimately, leading to debilitating weight loss.

Case Description/technique Description: We present a case of a 68-year-old female with a history of systemic lupus erythematosus presented with a large epiphrenic esophageal diverticulum with dysphagia, gastroesophageal reflux disease, and associated weight loss. The patient underwent a robotic-assisted laparoscopic epiphrenic diverticulectomy with esophageal myotomy.

Tailoring Single-Mode Random Lasing of Tin Halide Perovskites Integrated in a Vertical Cavity.

The development of random lasing (RL) with predictable and controlled properties is an important step to make these cheap optical sources stable and reliable. However, the design of tailored RL characteristics (emission energy, threshold, number of modes) is only obtained with complex photonic structures, while the simplest optical configurations able to tune the RL are still a challenge. This work demonstrates the tuning of the RL characteristics in spin-coated and inkjet-printed tin-based perovskites integrated into a vertical cavity with low quality factor.

Neuroimaging of Infectious Vasculopathy.

Vasculitis is a complication of several infectious diseases affecting the central nervous system, which may result in ischemic and/or hemorrhagic stroke, transient ischemic attack, and aneurysm formation. Infectious agents may directly infect the endothelium causing vasculitis or indirectly affect the vessel wall through an immunological cascade. Clinical manifestations usually overlap with those of noninfectious vascular diseases, making diagnosis challenging.

Synchronous colon cancer presenting as toxic megacolon in a patient with ulcerative colitis: A case report.

Introduction And Importance: The incidence of colorectal cancer in patients with inflammatory bowel disease is greater than the general population. Of those with inflammatory bowel disease, synchronous cancers are more common in ulcerative colitis than in Crohn's disease. It is rare for synchronous cancer to present as toxic megacolon in a patient with concomitant inflammatory bowel disease, specifically ulcerative colitis.

Effects of atmospheric low-level jets on the mixing process of a large tropical reservoir.

Changes in the physical and biogeochemical properties of water columns are frequently associated with cold fronts and mesoscale convective systems due to increased cloud cover. The effects of low-level jet (LLJ) events on thermal stratification and water quality, however, remain undescribed, particularly for tropical reservoirs. Here, water temperature time series are combined with meteorological data, LIDAR observations, ERA5 reanalysis data, and hydrodynamical modeling to investigate the impact of an event of LLJ over the Furnas hydropower reservoir in Brazil.

Vascular Myelopathies.

There are many vascular disorders that can affect the spinal cord, and their prevalence and etiology are highly influenced by age, sex, and risk factors. This article reviews the embryology and anatomy of the spinal cord, as well as several vascular conditions, describing their clinical and imaging presentation, emphasizing the different imaging modalities' contributions to increasing specificity and better defining the most appropriate therapy strategy for improving the patient's prognosis.

Imaging Aspects of Toxic and Metabolic Myelopathies.

Metabolic and toxic myelopathies usually occurs due to several different causes. Metabolic myelopathy usually occurs due to deficiency of a nutrient, such as vitamin B12. Toxic myelopathy occurs secondary to the exposure to an external toxic agent.

Robotic versus laparoscopic colectomy outcomes in colon adenocarcinoma in the elderly population: a propensity-score matched analysis of the National Cancer Database.

Purpose: While robotic surgery is more costly and involves longer intra-operative time, it has a technical advantage over laparoscopic surgery. With our aging population, patients are being diagnosed with colon cancer at older ages. The aim of this study is to compare laparoscopic versus robotic colectomy short- and long-term outcomes in elderly patients diagnosed with colon cancer at a national level.

Does race influence the attainment of the principles of oncologic surgical resection in colon adenocarcinoma? A retrospective cohort analysis from the national cancer database.

Unlabelled: The standard operation for colon cancer resection should follow certain principles to ensure appropriate oncologic resection, such as retrieving 12 or more nodes with the specimen and adequate surgical margins. Although these principles are well documented, there is little evidence regarding the association of race and the attainment of an adequate oncologic resection.

Methods: The authors performed a retrospective cohort study of all cases of resectable colon adenocarcinoma who underwent surgical resection in the National Cancer Database between 2004 and 2018.

Colo-cutaneous fistula to the thigh secondary to acute sigmoid diverticulitis: a case report.

Acute diverticulitis is one of the most common gastrointestinal illnesses that requires hospital admission. It has a broad range of presentations from uncomplicated disease to perforation and peritonitis that require emergent surgical exploration. Abscesses are one of the most common complications.

Intracranial vessel wall magnetic resonance imaging features of infectious vasculitis.

Vasculitis is a complication of several infectious diseases affecting the central nervous system, which may result in ischemic and/or hemorrhagic stroke, transient ischemic attack, and aneurysm formation. The infectious agent may directly infect the endothelium, causing vasculitis, or indirectly affect the vessel wall through an immunological mechanism. The clinical manifestations of these complications usually overlap with those of non-infectious vascular diseases, making diagnosis challenging.

Ischemic stroke with unknown onset of symptoms: current scenario and perspectives for the future.

Background: Stroke is a major cause of disability worldwide and a neurological emergency. Intravenous thrombolysis and mechanical thrombectomy are effective in the reperfusion of the parenchyma in distress, but the impossibility to determine the exact time of onset was an important cause of exclusion from treatment until a few years ago.

Objectives: To review the clinical and radiological profile of patients with unknown-onset stroke, the imaging methods to guide the reperfusion treatment, and suggest a protocol for the therapeutic approach.

Metastatic pancreatic adenocarcinoma presenting as large bowel obstruction: A case report.

Introduction And Importance: The incidence of pancreatic cancer has gradually increased over the past decades. Metastatic pancreatic cancer to the colon is rare with only seven cases reported. Symptomatic metastasis to the colon as the initial presentation of pancreatic adenocarcinoma has only been reported in two occasions prior to this report.

Arterial Spin Labeling: Techniques, Clinical Applications, and Interpretation.

Arterial spin labeling (ASL) is an emerging noninvasive MRI technique for assessing cerebral perfusion. An important advantage of ASL perfusion is the lack of a requirement for an exogenous tracer. ASL uses magnetically labeled water protons from arterial blood as an endogenous diffusible tracer.

Robotic-assisted extraction of giant gastric trichobezoar: a case report.

Trichobezoar is a rare condition, almost exclusively seen in young females with certain psychiatric disorders. Trichobezoars are usually confined within the stomach and the complications include ulceration, perforation, intussusception and obstruction for which surgery is usually required. Most of the reported cases of giant gastric trichobezoar extraction underwent an exploratory laparotomy with only a few reported cases that underwent a successful laparoscopic approach.

Phytobezoar causing small bowel obstruction in a patient with Crohn's disease: A case report.

Introduction And Importance: Bezoars form in any location in the gastrointestinal tract with the small bowel being uncommon. The presentation with a small bowel obstruction (SBO) is rare, representing less than 1 % of cases. Phytobezoar causing a SBO in the setting of Crohn's disease is exceedingly rare with only three cases reported in the literature.

Distance decay 2.0 - A global synthesis of taxonomic and functional turnover in ecological communities.

Aim: Understanding the variation in community composition and species abundances (i.e., β-diversity) is at the heart of community ecology.

Demographic Barriers for Genetic Testing in High-Risk Breast Cancer Patients in the Northern Michigan Area.

Introduction: The National Comprehensive Cancer Network (NCCN) has outlined guidelines for criteria regarding genetic testing for high-penetrance breast and/or ovarian cancer susceptibility genes. Due to the lack of availability of genetic counseling services in Northern Michigan prior to COVID-19, the utilization of genetic testing falls well below recommended guidelines.

Methods: Patients diagnosed with breast cancer in 2019 were randomly selected from Ascension Michigan's Northern Ministries Tumor Registry.

Neurological imaging findings in hospitalized COVID-19 patients: a retrospective observational study in two Brazilian reference centers.

Background: A variety of neurological manifestations have been attributed to COVID-19.

Objective: To investigate the occurrence of neurological symptoms and neuroimaging findings in patients hospitalized in two Brazilian reference centers.

Methods: We performed a retrospective cohort study of patients who had laboratory-confirmed COVID-19 presenting in two hospitals in Brazil between March 4 and July 7, 2020, who underwent brain imaging.

Imaging the External Ear: Practical Approach to Normal and Pathologic Conditions.

The external ear (EE) is an osseous-cartilaginous structure that extends from the auricle to the tympanic membrane. It is divided into two parts: the auricle (or pinna) and the external auditory canal (EAC). Given the ease of access to the EE, imaging studies are not always needed to make a diagnosis.