Hamman's syndrome accompanied by pneumorrhachis
Abstract Hearing disorders are usually unilateral and are more common in women. They can be congenital or acquired, and hearing loss is categorized as sensorineural, conductive, or mixed. The onset of hearing loss can be progressive or sudden, and it is a common reason for seeking medical attention. In this context, computed tomography and magnetic resonance imaging have assumed critical roles in the search for an etiological diagnosis and in guiding the therapeutic approach. In this pictorial essay, we illustrate the common causes of hearing loss, discussing the possible differential diagnoses and highlighting the most re...
Source: Radiologia Brasileira - February 25, 2019 Category: Radiology Source Type: research
Congenital lobar emphysema
Abstract Hearing disorders are usually unilateral and are more common in women. They can be congenital or acquired, and hearing loss is categorized as sensorineural, conductive, or mixed. The onset of hearing loss can be progressive or sudden, and it is a common reason for seeking medical attention. In this context, computed tomography and magnetic resonance imaging have assumed critical roles in the search for an etiological diagnosis and in guiding the therapeutic approach. In this pictorial essay, we illustrate the common causes of hearing loss, discussing the possible differential diagnoses and highlighting the most re...
Source: Radiologia Brasileira - February 25, 2019 Category: Radiology Source Type: research
Tuberculosis of the radius in a child
Abstract Hearing disorders are usually unilateral and are more common in women. They can be congenital or acquired, and hearing loss is categorized as sensorineural, conductive, or mixed. The onset of hearing loss can be progressive or sudden, and it is a common reason for seeking medical attention. In this context, computed tomography and magnetic resonance imaging have assumed critical roles in the search for an etiological diagnosis and in guiding the therapeutic approach. In this pictorial essay, we illustrate the common causes of hearing loss, discussing the possible differential diagnoses and highlighting the most re...
Source: Radiologia Brasileira - February 25, 2019 Category: Radiology Source Type: research
Isolated suprasellar involvement in tuberculosis: findings on magnetic resonance imaging
Abstract Hearing disorders are usually unilateral and are more common in women. They can be congenital or acquired, and hearing loss is categorized as sensorineural, conductive, or mixed. The onset of hearing loss can be progressive or sudden, and it is a common reason for seeking medical attention. In this context, computed tomography and magnetic resonance imaging have assumed critical roles in the search for an etiological diagnosis and in guiding the therapeutic approach. In this pictorial essay, we illustrate the common causes of hearing loss, discussing the possible differential diagnoses and highlighting the most re...
Source: Radiologia Brasileira - February 25, 2019 Category: Radiology Source Type: research
Hearing disorders - findings on computed tomography and magnetic resonance imaging: pictorial essay
Abstract Hearing disorders are usually unilateral and are more common in women. They can be congenital or acquired, and hearing loss is categorized as sensorineural, conductive, or mixed. The onset of hearing loss can be progressive or sudden, and it is a common reason for seeking medical attention. In this context, computed tomography and magnetic resonance imaging have assumed critical roles in the search for an etiological diagnosis and in guiding the therapeutic approach. In this pictorial essay, we illustrate the common causes of hearing loss, discussing the possible differential diagnoses and highlighting the most re...
Source: Radiologia Brasileira - February 25, 2019 Category: Radiology Source Type: research
Musculoskeletal "don't touch" lesions: pictorial essay
Abstract Focal bone lesions are not uncommon findings in the daily practice of radiology. Therefore, it is essential to differentiate between lesions with aggressive, malignant potential that require action and those that have no clinical significance, many of which are variants or benign lesions, sometimes self-limited and related to reactive processes. In some cases, a diagnostic error can have catastrophic results. For example, a biopsy performed in a patient with myositis ossificans can lead to an incorrect diagnosis of sarcomatous lesions and consequently to mutilating surgical procedures. The present study reviews th...
Source: Radiologia Brasileira - February 25, 2019 Category: Radiology Source Type: research
Magnetic resonance imaging of the breast: role in the evaluation of ductal carcinoma in situ
The objective of this study was to review the literature on the main presentations of DCIS on magnetic resonance imaging (MRI), through searches of the Medline/PubMed, Latin-American and Caribbean Center on Health Sciences Information (Lilacs), and Scientific Electronic Library Online (SciELO) databases. DCIS can occur in its pure form or in conjunction with invasive disease, in the same lesion, in different foci, or in the contralateral breast. MRI has a high sensitivity for the detection of pure DCIS, being able to identify the non-calcified component, and its accuracy increases with the nuclear grade of the lesion. The ...
Source: Radiologia Brasileira - February 25, 2019 Category: Radiology Source Type: research
Percutaneous transhepatic cholangiobiopsy
Abstract Most tumors of the biliary tract are too small to have specific imaging characteristics or for percutaneous puncture to provide sufficient material for diagnosis. Percutaneous transhepatic biliary drainage, in addition to being a well-established technique in the treatment of obstructive jaundice, provides adequate access for sampling obstructive lesions. In cases of biliary lesions, percutaneous transhepatic biopsy of the biliary tract has proven to be a useful diagnostic technique, with a reported accuracy of over 90% at some referral centers.Resumo Os tumores das vias biliares s ão, em sua maioria, muito peque...
Source: Radiologia Brasileira - February 25, 2019 Category: Radiology Source Type: research
Is interim 18F-fluoride PET/CT a predictor of outcomes after radium-223 therapy?
Conclusion: The skeletal tumor burden on an interim 18F-fluoride PET/CT, performed after three cycles of 223RaCl2, is not able to predict overall survival, progression-free survival, or time to bone event, and should not be performed to monitor response at this time.Resumo Objetivo: Avaliar se o PET/CT interim com fluoreto-18F ap ós a terceira dose da terapia com dicloreto de rádio-223 (223Ra) é capaz de identificar pacientes que não responderão ao tratamento. Materiais e Métodos: Revisamos, retrospectivamente, 34 pacientes com diagnóstico histológico de câncer de próstata refratários a hormonioterapia e com m...
Source: Radiologia Brasileira - February 25, 2019 Category: Radiology Source Type: research
18F-FDG PET/CT performed immediately after percutaneous ablation to evaluate outcomes of the procedure: preliminary results
Conclusion: iPA18F-FDG PET/CT studies appear to constitute a useful means of evaluating the outcomes of percutaneous ablation. By detecting residual viable tumor cells, this strategy might allow early re-intervention, thus reducing morbidity. Studies involving larger numbers of patients are needed in order to confirm our findings.Resumo Objetivo: Demonstrar se a tomografia por emiss ão de pósitrons acoplada a tomografia computadorizada usando-se fluorodesoxiglicose marcada com flúor-18 realizada imediatamente após ablação percutânea (iAP18F-FDG PET/CT) pode ser útil na avaliação do resultado desse tratamento. M...
Source: Radiologia Brasileira - February 25, 2019 Category: Radiology Source Type: research
C1-C2 fractures in asymptomatic elderly patients with minor head trauma: evaluation with a dedicated head CT protocol
Conclusion: Inclusion of the C1-C2 region in head CT scans allowed us to identify upper cervical spine injuries in 1.26% of asymptomatic elderly patients with minor head trauma. The protocol evaluated helps detect potentially life-threatening injuries and could be adopted for routine use in elderly individuals with minor head trauma.Resumo Objetivo: Avaliar a frequ ência e os tipos de lesões da coluna cervical superior em pacientes idosos assintomáticos submetidos a tomografia computadorizada (TC) para investigação de trauma leve na cabeça. Materiais e Métodos: De janeiro de 2015 a dezembro de 2016, analisamos pro...
Source: Radiologia Brasileira - February 25, 2019 Category: Radiology Source Type: research
Acute spontaneous unilateral adrenal hemorrhage: etiology and imaging findings in six cases
Conclusion: Adrenal hemorrhage, albeit rare, is potentially fatal. Early diagnosis is essential. Therefore, recognition of the possible presentations of these lesions by radiologists may help prevent hemorrhage from progressing to adrenal insufficiency and death.Resumo Objetivo: Avaliar as caracter ísticas de imagem na tomografia computadorizada de pacientes admitidos com suspeita clínica de hemorragia adrenal aguda em três instituições, no período de três anos, e que tiveram o diagnóstico final confirmado. Materiais e Métodos: Análise retrospectiva da tomografia computadorizada de pacientes com suspeita de hem...
Source: Radiologia Brasileira - February 25, 2019 Category: Radiology Source Type: research
Agreement between diagnostic imaging methods for the evaluation of lymphadenopathies in HIV-infected/AIDS patients
Conclusion: This study indicates that intermethod agreement is highly dependent on the way in which the research is conducted, rather than on the level of experience of the examiner.Resumo Objetivo: Avaliar a porcentagem de concord ância entre métodos de diagnóstico por imagem na avaliação de linfonodomegalias em pacientes HIV(+)/AIDS. Materiais e Métodos: Foi realizado estudo aberto, comparativo e prospectivo dos métodos de diagnóstico por imagem na avaliação de linfonodomegalias. Foram avaliados 30 pacientes (19 h omens e 11 mulheres). Todos foram submetidos a ultrassonografia e tomografia computadorizada (TC...
Source: Radiologia Brasileira - February 25, 2019 Category: Radiology Source Type: research
Quantification of visceral adipose tissue by computed tomography and magnetic resonance imaging: reproducibility and accuracy
Conclusion: The program employed can be used in order to quantify VAT on CT, T1-weighted MRI, and T2-weighted MRI scans. Overall, the accuracy of MRI (in comparison with that of CT) appears to be high, as do intraobserver and interobserver reproducibility. However, the quantification of VAT seems to be less reproducible in T1-weighted sequences.Resumo Objetivo: Avaliar a viabilidade da quantifica ção do tecido adiposo visceral (TAV) pela tomografia computadorizada (TC) e ressonância magnética (RM) usando um software freeware, e também calcular a reprodutibilidade intraobservador e interobservador. Materiais e Métod...
Source: Radiologia Brasileira - February 25, 2019 Category: Radiology Source Type: research
"Don't touch" bone lesions: how can we contribute?
(Source: Radiologia Brasileira)
Source: Radiologia Brasileira - February 25, 2019 Category: Radiology Source Type: research
