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1.
Health Promot Pract ; 18(3): 323-326, 2017 05.
Artigo em Inglês | MEDLINE | ID: mdl-28420267

RESUMO

Emerging professionals and new Certified Health Education Specialists often lack academic training in and actual experience in National Commission for Health Education Credentialing Area of Responsibility VII: Communicate, Promote, and Advocate for Health, Health Education/Promotion, and the Profession. For undergraduate and graduate students who have an opportunity to complete an internship or practicum experience, gaining experience in Competencies 7.2: Engage in advocacy for health and health education/promotion and 7.3: Influence policy and/or systems change to promote health and health education can have a profound impact on their career development and their ability to advocate for policies that promote health and health equity. Compelling evidence suggests that interventions that address social determinants of health such as poverty and education and those that change the context through improved policy or healthier environments have the greatest impact on public health, making it vital for emerging public health professionals to gain experience in policy advocacy and systems change. In this commentary, students and faculty from two large universities in the U.S.-Mexico border region reflect on the value of policy advocacy in academic internship/fieldwork experiences. Based on their experiences, they highly recommend that students seek out internship opportunities where they can participate in policy advocacy, and they encourage university faculty and practicum preceptors to provide more opportunities for policy advocacy in both classroom and fieldwork settings.


Assuntos
Educadores em Saúde/educação , Política de Saúde , Internato não Médico/organização & administração , Mentores/psicologia , Estudantes de Saúde Pública/psicologia , Defesa do Consumidor , Promoção da Saúde/organização & administração , Humanos , México , Competência Profissional , Desenvolvimento de Pessoal/organização & administração , Estados Unidos
2.
Clin Obstet Gynecol ; 59(2): 322-35, 2016 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-27029017

RESUMO

The following topics are discussed in this article. A historical review of the evolution of breast cancer imaging from thermography through digital breast tomosynthesis, molecular breast imaging, and advanced breast magnetic resonance imaging. Discussion of multiple clinical trials, their strengths, and weaknesses. Historical perspective on the Mammography Quality Standards Act and its relationship with development and implementation of the Breast Imaging-Reporting and Data System (BI-RADS).


Assuntos
Neoplasias da Mama/diagnóstico por imagem , Mamografia/tendências , Ensaios Clínicos Controlados Aleatórios como Assunto , Feminino , Humanos , Imageamento por Ressonância Magnética , Mamografia/normas , Imagem Molecular , Termografia/tendências , Xeromamografia/tendências
3.
Cureus ; 15(3): e35725, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37025740

RESUMO

SARS-CoV-2, responsible for the COVID-19 pandemic, is a highly infectious virus that quickly became and continues to be a public health emergency, given the severe international implications. Immunocompromised patients, such as those undergoing kidney transplantation, are at an increased risk for severe illness from COVID-19 and require hospitalization for more aggressive treatment to ensure survival. COVID-19 has been infecting kidney transplant recipients (KTRs), affecting their treatment protocols, and threatening their survival. The objective of this scoping review was to summarize the published literature regarding the impact of COVID-19 on KTRs in the United States in terms of prevention, various treatment protocols, COVID-19 vaccination, and risk factors. The databases such as PubMed, MEDLINE/Ebsco, and Embase were used to search for peer-reviewed literature. The search was restricted to articles that were published on KTRs in the United States from January 1, 2019, to March 2022. The initial search yielded 1,023 articles after removing duplicates, leading to a final selection of 16 articles after screening with inclusion and exclusion criteria. Four domains emerged from the review: (1) impacts of COVID-19 on performing kidney transplants, (2) impacts of COVID-19 vaccinations on KTRs, (3) outcomes of treatment regiments for KTRs with COVID-19, and (4) risk factors associated with an increased mortality rate of COVID-19 in KTRs. Waitlisted patients for kidney transplants had a higher risk of mortality compared to nontransplant patients. COVID-19 vaccinations in KTRs are found to be safe, and the immune response can be improved by placing patients on a low dose of mycophenolate before vaccination. Withdrawal of immunosuppressants showed a mortality rate of 20% without increasing the rate of acute kidney injury (AKI). There is evidence to support that kidney transplantation with the accompanying immunosuppressant regimen can provide KTRs with better COVID-19 infection outcomes compared to waitlisted patients. Hospitalization, graft dysfunction, AKI, and respiratory failure were the most common risk factors that increased the risk of mortality in COVID-19-positive KTRs. Withdrawing KTRs from immunosuppressive drugs increased the mortality rate. Further studies are needed to investigate the effects of specific drugs and dosages on the severity and mortality rate of COVID-19 in KTRs.

4.
Front Public Health ; 10: 969922, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36311580

RESUMO

Introduction: The COVID-19 pandemic has brought about important changes. On March 14, 2020, a strict home confinement was decreed in Spain. Children did not attend school and were not allowed to leave their homes. The aim of this study was to determine the emotional state of these children, as well as associated factors. Material and methods: A cross-sectional descriptive study was conducted using an online questionnaire sent by cell phone. This survey includes sociodemographic items and questions concerning the emotional impact of the lockdown. With the questions on emotions, two categories of emotional state were established with the variables fear, irritability, sadness and somatization: those who were less or more emotionally affected. A multivariate logistic model was used to estimate the associations between the variables. Results: A total of 3,890 responses were obtained. The mean age of the children was 6.78 years (range 0 to 16). A score indicating poor emotional state was reported by 40.12%. The multivariate logistic model for poor emotional state was directly associated with having less appetite, sleep disturbances, and with parents' beliefs that their child will have difficulties returning to normal life after lockdown. A better emotional state was associated with being an only child, access to outdoor spaces at home, having pets, and parents informing their children about the pandemic using creative explanations. Conclusions: During strict home confinement, a considerable emotional impact was observed in children as described by their parents. Specific elements were associated with a better or poorer emotional state.


Assuntos
COVID-19 , Pandemias , Criança , Humanos , Recém-Nascido , Lactente , Pré-Escolar , Adolescente , Espanha/epidemiologia , COVID-19/epidemiologia , Estudos Transversais , Controle de Doenças Transmissíveis , Emoções
5.
J Am Coll Radiol ; 19(11S): S329-S340, 2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-36436960

RESUMO

Abdominopelvic hernias are common clinical entities composed of a wide variety of congenital, traumatic, and iatrogenic etiologies. Any weakness in the body wall may result in hernia of cavity contents with concomitant risks of morbidity and mortality. Presentations may be specific, palpable body wall mass/bulge, or vague, nonspecific pain through bowel obstruction. This document focuses on initial imaging of the adult population with signs of symptoms prompting suspicion of abdominopelvic hernia. Imaging of the abdomen and pelvis to evaluate defects is essential for prompt diagnosis and treatment. Often CT and ultrasound are the first-line modalities to quickly evaluate the abdomen and pelvis, providing for accurate diagnoses and management of patients. MRI protocols may be useful as first-line imaging studies, especially in patients with orthopedic instrumentation. Although often performed, abdominal radiographs and fluorographic procedures may provide indirect evidence of hernias but are usually not indicated for initial diagnosis of hernia. The ACR Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision process support the systematic analysis of the medical literature from peer-reviewed journals. Established methodology principles such as Grading of Recommendations Assessment, Development, and Evaluation or GRADE are adapted to evaluate the evidence. The RAND/UCLA Appropriateness Method User Manual provides the methodology to determine the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances in which peer-reviewed literature is lacking or equivocal, experts may be the primary evidentiary source available to formulate a recommendation.


Assuntos
Meios de Contraste , Sociedades Médicas , Humanos , Medicina Baseada em Evidências , Imageamento por Ressonância Magnética/métodos , Hérnia
6.
J Am Coll Radiol ; 19(5S): S208-S222, 2022 05.
Artigo em Inglês | MEDLINE | ID: mdl-35550803

RESUMO

Preoperative imaging of rectal carcinoma involves accurate assessment of the primary tumor as well as distant metastatic disease. Preoperative imaging of nonrectal colon cancer is most beneficial in identifying distant metastases, regardless of primary T or N stage. Surgical treatment remains the definitive treatment for colon cancer, while organ-sparing approach may be considered in some rectal cancer patients based on imaging obtained before and after neoadjuvant treatment. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where evidence is lacking or equivocal, expert opinion may supplement the available evidence to recommend imaging or treatment.


Assuntos
Neoplasias do Colo , Neoplasias Retais , Diagnóstico por Imagem/métodos , Humanos , Terapia Neoadjuvante , Sociedades Médicas , Estados Unidos
7.
J Am Coll Radiol ; 18(11S): S268-S282, 2021 11.
Artigo em Inglês | MEDLINE | ID: mdl-34794588

RESUMO

This review summarizes the relevant literature for the selection of the initial imaging in 4 clinical scenarios in patients with suspected inflammatory disease or postoperative complication of the anorectum. These clinical scenarios include suspected perianal fistula or abscess; rectovesicular or rectovaginal fistula; proctitis or pouchitis; and suspected complication following proctectomy, coloproctectomy, or colectomy with a pouch or other anastomosis. The appropriateness of imaging modalities as they apply to each clinical scenario is rated as usually appropriate, may be appropriate, and usually not appropriate to assist the selection of the most appropriate imaging modality in the corresponding clinical scenarios of anorectal disease. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where evidence is lacking or equivocal, expert opinion may supplement the available evidence to recommend imaging or treatment.


Assuntos
Doenças Retais , Sociedades Médicas , Diagnóstico por Imagem , Humanos , Estados Unidos
8.
Radiol Case Rep ; 15(7): 854-857, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-32382366

RESUMO

Lipomas are benign mesenchymal neoplasms that arise from adipocytes. Most lipomas are found in the subcutaneous tissue; however, they can be present throughout the body. Lipomas arising from the thoracic pleura are exceptionally rare, with only approximately 20 cases ever reported in the literature. While typically asymptomatic, pleural lipomas may cause compressive symptoms such as nonproductive cough, chest pain, and dyspnea if they reach adequate size. A CT scan is usually sufficient for the diagnosis and typically reveals well-defined nodules with homogenous fat attenuation of approximately -50 to -150 Hounsfield units. Management is dependent on various factors including tumor size and location, associated symptoms, and age of the patient. Pleural lipomatosis, although exceedingly rare, should be maintained in the differential diagnosis for any well-defined, fat-attenuating pleural mass identified on conventional radiologic studies. Here we report a case of pleural lipomatosis associated with bilateral pleural effusions identified in an 83-year-old male presenting with acute onset dyspnea.

9.
J Am Coll Radiol ; 17(5S): S305-S314, 2020 May.
Artigo em Inglês | MEDLINE | ID: mdl-32370974

RESUMO

Small-bowel obstruction is a common cause of abdominal pain and accounts for a significant proportion of hospital admissions. Radiologic imaging plays the key role in the diagnosis and management of small-bowel obstruction as neither patient presentation, the clinical examination, nor laboratory testing are sufficiently sensitive or specific enough to diagnose or guide management. This document focuses on the imaging evaluation of the two most commonly encountered clinical scenarios related to small-bowel obstruction: the acute presentation and the more indolent, low-grade, or intermittent presentation. This document hopes to clarify the appropriate utilization of the many imaging procedures that are available and commonly employed in these clinical settings. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where evidence is lacking or equivocal, expert opinion may supplement the available evidence to recommend imaging or treatment.


Assuntos
Medicina Baseada em Evidências , Sociedades Médicas , Dor Abdominal , Diagnóstico Diferencial , Diagnóstico por Imagem , Humanos , Estados Unidos
10.
J Am Coll Radiol ; 17(5S): S81-S99, 2020 May.
Artigo em Inglês | MEDLINE | ID: mdl-32370980

RESUMO

Three common clinical scenarios involving use of imaging in Crohn disease are covered. These include the initial evaluation of Crohn disease when the diagnosis has not been previously established, the evaluation for anticipated exacerbation of known disease, and the evaluation of disease activity during therapy monitoring. The appropriateness of a given imaging modality for each scenario is rated as one of three categories (usually appropriate, may be appropriate, usually not appropriate) to help guide evaluation. Pediatric presentation of Crohn disease and the appropriateness of imaging are not covered in this document. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where evidence is lacking or equivocal, expert opinion may supplement the available evidence to recommend imaging or treatment.


Assuntos
Doença de Crohn , Doença de Crohn/diagnóstico por imagem , Diagnóstico Diferencial , Diagnóstico por Imagem , Medicina Baseada em Evidências , Humanos , Sociedades Médicas , Estados Unidos
11.
Artigo em Inglês | MEDLINE | ID: mdl-29737265

RESUMO

Nanotechnology has gained increased attention for delivering therapeutic agents effectively to the cardiovascular system. Heart targeted nanocarrier based drug delivery is a new, effective and efficacious approach for treating various cardiac related disorders such as atherosclerosis, hypertension, and myocardial infarction. Nanocarrier based drug delivery system circumvents the problems associated with conventional drug delivery systems, including their nonspecificity, severe side effects and damage to the normal cells. Modification of physicochemical properties of nanocarriers such as size, shape and surface modifications can immensely alter its invivo pharmacokinetic and pharmacodynamic data and will provide better treatment strategy. Several nanocarriers such as lipid, phospholipid nanoparticles have been developed for delivering drugs to the target sites within the heart. This review summarizes and increases the understanding of the advanced nanosized drug delivery systems for treating cardiovascular disorders with the promising use of nanotechnology.


Assuntos
Doenças Cardiovasculares/terapia , Sistemas de Liberação de Medicamentos/métodos , Nanomedicina/métodos , Nanopartículas/uso terapêutico , Doenças Cardiovasculares/patologia , Humanos
12.
J Am Coll Radiol ; 16(11S): S384-S391, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31685106

RESUMO

Palpable abdominal masses may arise from the abdominal cavity or the abdominal wall. The differential diagnosis is broad for each variant ranging from benign lipomas, inflammatory processes, to malignant tumors. The imaging approach to diagnosis varies by location. For intra-abdominal masses, contrast-enhanced CT and ultrasound examination have demonstrated accuracy. For abdominal wall masses, which may arise from muscle, subcutaneous tissue, or connective tissue, MRI, CT, and ultrasound all provide diagnostic value. This publication reviews the current evidence supporting the imaging approach to diagnosis of palpable abdominal masses for two variants: suspected intra-abdominal neoplasm and suspected abdominal wall masses. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where evidence is lacking or equivocal, expert opinion may supplement the available evidence to recommend imaging or treatment.


Assuntos
Cavidade Abdominal/diagnóstico por imagem , Neoplasias Abdominais/diagnóstico por imagem , Neoplasias Abdominais/patologia , Diagnóstico por Imagem/métodos , Guias de Prática Clínica como Assunto , Cavidade Abdominal/patologia , Meios de Contraste , Medicina Baseada em Evidências , Feminino , Humanos , Imageamento por Ressonância Magnética/métodos , Masculino , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada/métodos , Controle de Qualidade , Sensibilidade e Especificidade , Sociedades Médicas/normas , Tomografia Computadorizada por Raios X/métodos , Ultrassonografia Doppler/métodos , Estados Unidos
13.
J Am Coll Radiol ; 16(5S): S104-S115, 2019 May.
Artigo em Inglês | MEDLINE | ID: mdl-31054737

RESUMO

This review summarizes the relevant literature for the initial imaging of patients with symptoms of dysphagia. For patients with oropharyngeal dysphagia who have an underlying attributable cause, a modified barium swallow is usually appropriate for initial imaging but for those who have unexplained dysphagia a fluoroscopic biphasic esophagram is usually appropriate. Fluoroscopic biphasic esophagram is usually appropriate for initial imaging in both immunocompetent and immunocompromised patients who have retrosternal dysphagia. For postoperative patients with dysphagia, fluoroscopic single-contrast esophagram and CT neck and chest with intravenous (IV) contrast are usually appropriate for oropharyngeal or retrosternal dysphagia occurring in the early postoperative period where water-soluble contrast is usually preferred rather than barium sulfate. In the later postoperative period (greater than 1 month), CT neck and chest with IV contrast and fluoroscopic single-contrast esophagram are usually appropriate. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where evidence is lacking or equivocal, expert opinion may supplement the available evidence to recommend imaging or treatment.


Assuntos
Transtornos de Deglutição/diagnóstico por imagem , Meios de Contraste , Diagnóstico Diferencial , Medicina Baseada em Evidências , Humanos , Sociedades Médicas , Estados Unidos
14.
J Am Coll Radiol ; 16(5S): S141-S149, 2019 May.
Artigo em Inglês | MEDLINE | ID: mdl-31054740

RESUMO

This review summarizes the relevant literature regarding imaging of suspected diverticulitis as an etiology for left lower quadrant pain, and imaging of complications of acute diverticulitis. The most common cause of left lower quadrant pain in adults is acute sigmoid or descending colonic diverticulitis. Appropriate imaging triage for patients with suspected diverticulitis should address the differential diagnostic possibilities and what information is necessary to make a definitive management decision. Patients with diverticulitis may require surgery or interventional radiology procedures because of associated complications, including abscesses, fistulas, obstruction, or perforation. As a result, there has been a trend toward greater use of imaging to confirm the diagnosis of diverticulitis, evaluate the extent of disease, and detect complications before deciding on appropriate treatment. Additionally, in the era of bundled payments and minimizing health care costs, patients with acute diverticulitis are being managed on an outpatient basis and rapid diagnostic imaging at the time of initial symptoms helps to streamline and triage patients to the appropriate treatment pathway. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where evidence is lacking or equivocal, expert opinion may supplement the available evidence to recommend imaging or treatment.


Assuntos
Dor Abdominal/diagnóstico por imagem , Doença Diverticular do Colo/diagnóstico por imagem , Meios de Contraste , Diagnóstico Diferencial , Medicina Baseada em Evidências , Humanos , Sociedades Médicas , Estados Unidos
15.
J Am Coll Radiol ; 15(11S): S373-S387, 2018 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-30392606

RESUMO

Appendicitis remains the most common surgical pathology responsible for right lower quadrant (RLQ) abdominal pain presenting to emergency departments in the United States, where the incidence continues to increase. Appropriate imaging in the diagnosis of appendicitis has resulted in decreased negative appendectomy rate from as high as 25% to approximately 1% to 3%. Contrast-enhanced CT remains the primary and most appropriate imaging modality to evaluate this patient population. MRI is approaching CT in sensitivity and specificity as this technology becomes more widely available and utilization increases. Unenhanced MRI and ultrasound remain the diagnostic procedures of choice in the pregnant patient. MRI and ultrasound continue to perform best in the hands of experts. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where evidence is lacking or equivocal, expert opinion may supplement the available evidence to recommend imaging or treatment.


Assuntos
Dor Abdominal/diagnóstico por imagem , Apendicite/diagnóstico por imagem , Imageamento por Ressonância Magnética/métodos , Tomografia Computadorizada por Raios X/métodos , Meios de Contraste , Diagnóstico Diferencial , Medicina Baseada em Evidências , Humanos , Sociedades Médicas , Estados Unidos
16.
J Am Coll Radiol ; 15(5S): S56-S68, 2018 May.
Artigo em Inglês | MEDLINE | ID: mdl-29724427

RESUMO

This review summarizes the relevant literature regarding colorectal screening with imaging. For individuals at average or moderate risk for colorectal cancer, CT colonography is usually appropriate for colorectal cancer screening. After positive results on a fecal occult blood test or immunohistochemical test, CT colonography is usually appropriate for colorectal cancer detection. For individuals at high risk for colorectal cancer (eg, hereditary nonpolyposis colorectal cancer, ulcerative colitis, or Crohn colitis), optical colonoscopy is preferred because of its ability to obtain biopsies to detect dysplasia. After incomplete colonoscopy, CT colonography is usually appropriate for colorectal cancer screening for individuals at average, moderate, or high risk. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where evidence is lacking or equivocal, expert opinion may supplement the available evidence to recommend imaging or treatment.


Assuntos
Colonografia Tomográfica Computadorizada , Colonoscopia , Neoplasias Colorretais/diagnóstico por imagem , Detecção Precoce de Câncer , Medicina Baseada em Evidências , Humanos , Sociedades Médicas , Estados Unidos
17.
J Am Coll Radiol ; 15(11S): S217-S231, 2018 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-30392591

RESUMO

The range of pathology in adults that can produce abdominal pain is broad and necessitates an imaging approach to evaluate many different organ systems. Although localizing pain prompts directed imaging/management, clinical presentations may vary and result in nonlocalized symptoms. This review focuses on imaging the adult population with nonlocalized abdominal pain, including patients with fever, recent abdominal surgery, or neutropenia. Imaging of the entire abdomen and pelvis to evaluate for infectious or inflammatory processes of the abdominal viscera and solid organs, abdominal and pelvic neoplasms, and screen for ischemic or vascular etiologies is essential for prompt diagnosis and treatment. Often the first-line modality, CT quickly evaluates the abdomen/pelvis, providing for accurate diagnoses and management of patients with abdominal pain. Ultrasound and tailored MRI protocols may be useful as first-line imaging studies, especially in pregnant patients. In the postoperative abdomen, fluoroscopy may help detect anastomotic leaks/abscesses. While often performed, abdominal radiographs may not alter management. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where evidence is lacking or equivocal, expert opinion may supplement the available evidence to recommend imaging or treatment.


Assuntos
Abdome Agudo/diagnóstico por imagem , Meios de Contraste , Diagnóstico Diferencial , Medicina Baseada em Evidências , Fluoroscopia , Humanos , Imageamento por Ressonância Magnética/métodos , Sociedades Médicas , Tomografia Computadorizada por Raios X/métodos , Ultrassonografia/métodos
18.
J Am Coll Radiol ; 14(5S): S234-S244, 2017 May.
Artigo em Inglês | MEDLINE | ID: mdl-28473079

RESUMO

Colorectal cancers are common tumors in the United States and appropriate imaging is essential to direct appropriate care. Staging and treatment differs between tumors arising in the colon versus the rectum. Local staging for colon cancer is less integral to directing therapy given radical resection is often standard. Surgical options for rectal carcinoma are more varied and rely on accurate assessment of the sphincter, circumferential resection margins, and peritoneal reflection. These important anatomic landmarks are best appreciated on high-resolution imaging with transrectal ultrasound or MRI. When metastatic disease is suspected, imaging modalities that provide a global view of the body, such as CT with contrast or PET/CT may be indicated. Rectal cancer often metastasizes to the liver and so MRI of the liver with and without contrast provides accurate staging for liver metastases. This article focuses on local and distant staging and reviews the appropriateness of different imaging for both variants. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where evidence is lacking or equivocal, expert opinion may supplement the available evidence to recommend imaging or treatment.


Assuntos
Neoplasias do Colo/diagnóstico por imagem , Neoplasias Retais/diagnóstico por imagem , Pontos de Referência Anatômicos/diagnóstico por imagem , Neoplasias do Colo/cirurgia , Humanos , Neoplasias Hepáticas/diagnóstico por imagem , Neoplasias Hepáticas/secundário , Imageamento por Ressonância Magnética , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Radiologia , Neoplasias Retais/patologia , Neoplasias Retais/cirurgia , Sociedades Médicas , Tomografia Computadorizada por Raios X , Ultrassonografia/métodos , Estados Unidos
20.
G3 (Bethesda) ; 4(2): 297-306, 2014 Feb 19.
Artigo em Inglês | MEDLINE | ID: mdl-24347626

RESUMO

The large number of RNA-binding proteins and translation factors encoded in the Drosophila and other metazoan genomes predicts widespread use of post-transcriptional regulation in cellular and developmental processes. Previous studies identified roles for several RNA-binding proteins in dendrite branching morphogenesis of Drosophila larval sensory neurons. To determine the larger contribution of post-transcriptional gene regulation to neuronal morphogenesis, we conducted an RNA interference screen to identify additional Drosophila proteins annotated as either RNA-binding proteins or translation factors that function in producing the complex dendritic trees of larval class IV dendritic arborization neurons. We identified 88 genes encoding such proteins whose knockdown resulted in aberrant dendritic morphology, including alterations in dendritic branch number, branch length, field size, and patterning of the dendritic tree. In particular, splicing and translation initiation factors were associated with distinct and characteristic phenotypes, suggesting that different morphogenetic events are best controlled at specific steps in post-transcriptional messenger RNA metabolism. Many of the factors identified in the screen have been implicated in controlling the subcellular distributions and translation of maternal messenger RNAs; thus, common post-transcriptional regulatory strategies may be used in neurogenesis and in the generation of asymmetry in the female germline and embryo.


Assuntos
Dendritos/metabolismo , Proteínas de Drosophila/genética , Drosophila/genética , Morfogênese/genética , Neurogênese/genética , Proteínas de Ligação a RNA/genética , Células Receptoras Sensoriais/metabolismo , Animais , Drosophila/crescimento & desenvolvimento , Drosophila/metabolismo , Proteínas de Drosophila/metabolismo , Larva/citologia , Larva/metabolismo , Biossíntese de Proteínas , Proteínas de Ligação a RNA/metabolismo , Células Receptoras Sensoriais/citologia
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