Antegrade insertion of a double J catheter in the treatment of malignant ureteral obstruction: a retrospective analysis of the results obtained with a modified technique at a university hospital
Conclusion: In patients with ureteral obstruction due to malignancy, antegrade JJ stenting is safe and effective. The technique selected in our study is easily reproduced and can be performed by a trained professional.Artigos Objetivo: An álise retrospectiva dos resultados de uma técnica modificada de inserção anterógrada de cateter duplo J em pacientes com obstrução do trato urinário por causas oncológicas. Materiais e Métodos: Coleta e análise retrospectiva de dados de pacientes submetidos a inserção anterógrada de c ateter duplo J por obstruções ureterais neoplásicas no departamento de radiologia inte...
Source: Radiologia Brasileira - June 8, 2020 Category: Radiology Source Type: research
Comparison of automated and manual protocols for magnetic resonance imaging assessment of liver iron concentration
Conclusion: At 1.5 T, T2* mapping is a rapid tool that shows promise for the diagnosis of liver iron overload, whereas T1 mapping shows less accuracy. The performance of T1 mapping is poorer than is that of T2* methods.Resumo Objetivo: Comparar protocolos automatizados e manuais de resson ância magnética para estimar a concentração hepática de ferro em 1,5 T. Materiais e Métodos: Foi realizada ressonância magnética hepática em 53 pacientes com suspeita de sobrecarga de ferro hepática e 21 controles, seguida da estimativa cega da concentração hepática de ferro por dois e xaminadores usando mapas automáticos ...
Source: Radiologia Brasileira - June 8, 2020 Category: Radiology Source Type: research
Early trends and predictors of renal function following computed tomography-guided percutaneous cryoablation of a renal mass in patients with and without prior renal impairment
Conclusion: The trend in GFR decline after cryoablation is similar for patients with and without a history of renal impairment. Baseline GFR predicts the mean GFR in the early post-cryoablation period.Resumo Objetivo: Medir as tend ências iniciais da função renal pela taxa de filtração glomerular (TFG) em pacientes com e sem comprometimento renal prévio após crioablação renal. Materiais e Métodos: Este é um estudo retrospectivo de 39 pacientes submetidos a crioablação percutânea guiada por tomografia computadori zada de massa renal. Os pacientes foram divididos em dois grupos: com comprometimento renal pré...
Source: Radiologia Brasileira - June 8, 2020 Category: Radiology Source Type: research
The diagnosis of focal liver lesions in pediatric patients
(Source: Radiologia Brasileira)
Source: Radiologia Brasileira - June 8, 2020 Category: Radiology Source Type: research
Imaging evaluation of hallux valgus
(Source: Radiologia Brasileira)
Source: Radiologia Brasileira - June 8, 2020 Category: Radiology Source Type: research
Renal function after percutaneous cryoablation of renal masses
(Source: Radiologia Brasileira)
Source: Radiologia Brasileira - June 8, 2020 Category: Radiology Source Type: research
Retraction
Abstract Various neuropathologies produce hyperintense signals on T2-weighted or fluid-attenuated inversion recovery sequences of the temporal lobes. Recognition of the distribution pattern and associated findings may narrow the spectrum of differential diagnoses or suggest a specific disease. This pictorial essay aims to illustrate the relatively common diseases that affect the temporal lobe, such as herpes simplex encephalitis, neurosyphilis, limbic encephalitis, postictal edema, neoplasia, and multiple sclerosis, as well as those that are less common, such as myotonic dystrophy type 1, CADASIL, and CARASIL, together wit...
Source: Radiologia Brasileira - April 17, 2020 Category: Radiology Source Type: research
Differential diagnosis of temporal lobe lesions with hyperintense signal on T2-weighted and FLAIR sequences: pictorial essay
Abstract Various neuropathologies produce hyperintense signals on T2-weighted or fluid-attenuated inversion recovery sequences of the temporal lobes. Recognition of the distribution pattern and associated findings may narrow the spectrum of differential diagnoses or suggest a specific disease. This pictorial essay aims to illustrate the relatively common diseases that affect the temporal lobe, such as herpes simplex encephalitis, neurosyphilis, limbic encephalitis, postictal edema, neoplasia, and multiple sclerosis, as well as those that are less common, such as myotonic dystrophy type 1, CADASIL, and CARASIL, together wit...
Source: Radiologia Brasileira - April 17, 2020 Category: Radiology Source Type: research
Focal hyperechoic liver lesions in children: far beyond hemangiomas - pictorial essay
Abstract The aim of this report was to present a selection of focal hyperechoic liver lesions of different etiologies, illustrating the wide spectrum of diagnostic possibilities for such lesions in the pediatric population.Resumo Apresentamos uma sele ção de lesões focais hiperecogênicas hepáticas de diversas etiologias, que ilustram o grande espectro de diferentes possibilidades diagnósticas dessas lesões na faixa pediátrica, muito além dos hemangiomas. (Source: Radiologia Brasileira)
Source: Radiologia Brasileira - April 17, 2020 Category: Radiology Source Type: research
Ultrasound versus electromyography for the detection of fasciculation in amyotrophic lateral sclerosis: systematic review and meta-analysis
The objective of this study was to determine the diagnostic accuracy of ultrasound and electromyography for the detection of fasciculation in patients with amyotrophic lateral sclerosis and to compare detection rates between the two methods. By searching the Cochrane Library, MEDLINE, Excerpta Medica, and Latin-American and Caribbean Health Sciences Literature databases, we identified studies evaluating the diagnostic accuracy and fasciculation detection rates of ultrasound and electromyography. The Quality Assessment of Diagnostic Accuracy Studies, version 2, and RTI item bank tools were used for the evaluation of methodo...
Source: Radiologia Brasileira - April 17, 2020 Category: Radiology Source Type: research
Computed tomography-guided percutaneous neurolysis of celiac plexus: technical description
Conclusion: Granular cell tumors of the breast pose a diagnostic challenge because they can present with clinical and imaging features mimicking malignancy, and the diagnosis is therefore provided by pathology. Radiologists should be familiarized with this entity, so they can be aware of the fact that breast lesions with spiculated margins can be indicative of diagnoses other than malignancy.Resumo Objetivo: Rever as caracter ísticas de imagem dos tumores de células granulares da mama (mamográficas, ultrassonográficas e de ressonância magnética), estabelecendo uma correlação anatomopatológica, no intuito de propo...
Source: Radiologia Brasileira - April 17, 2020 Category: Radiology Source Type: research
Fetal skeletal dysplasias: a new way to look at them
Conclusion: Granular cell tumors of the breast pose a diagnostic challenge because they can present with clinical and imaging features mimicking malignancy, and the diagnosis is therefore provided by pathology. Radiologists should be familiarized with this entity, so they can be aware of the fact that breast lesions with spiculated margins can be indicative of diagnoses other than malignancy.Resumo Objetivo: Rever as caracter ísticas de imagem dos tumores de células granulares da mama (mamográficas, ultrassonográficas e de ressonância magnética), estabelecendo uma correlação anatomopatológica, no intuito de propo...
Source: Radiologia Brasileira - April 17, 2020 Category: Radiology Source Type: research
Granular cell tumor of the breast: correlations between imaging and pathology findings
Conclusion: Granular cell tumors of the breast pose a diagnostic challenge because they can present with clinical and imaging features mimicking malignancy, and the diagnosis is therefore provided by pathology. Radiologists should be familiarized with this entity, so they can be aware of the fact that breast lesions with spiculated margins can be indicative of diagnoses other than malignancy.Resumo Objetivo: Rever as caracter ísticas de imagem dos tumores de células granulares da mama (mamográficas, ultrassonográficas e de ressonância magnética), estabelecendo uma correlação anatomopatológica, no intuito de propo...
Source: Radiologia Brasileira - April 17, 2020 Category: Radiology Source Type: research
Background parenchymal enhancement: behavior during neoadjuvant chemotherapy for breast cancer and relationship with a pathological complete response
Conclusion: Patients with invasive unilateral breast cancer who have a high pre-NAC BPE in both breasts tend to be under 50 years of age and to show a post-NAC reduction in BPE.Resumo Objetivo: Avaliar o realce de fundo do par ênquima (RFP), suas características e seu comportamento pré- e pós-quimioterapia neoadjuvante (QTN) em ambas as mamas em pacientes com câncer de mama unilateral. Materiais e Métodos: Estudo observacional transversal retrospectivo realizado em um serviço acadêmico e um centro especializado e m mamas, que incluiu mulheres com câncer de mama invasivo submetidas a QTN e que realizaram exames d...
Source: Radiologia Brasileira - April 17, 2020 Category: Radiology Source Type: research
The value of signal intensity on T1-weighted chemical shift magnetic resonance imaging combined with proton magnetic resonance spectroscopy for the diagnosis of adrenal adenomas
Conclusion: Determining the SII and metabolite ratios increased the accuracy of the differential diagnosis of adrenal adenomas.Resumo Objetivo: Investigar as vantagens do uso de medi ções do índice de intensidade de sinal modificadas em imagens de deslocamento químico (chemical shift), isoladamente ou em conjunto com a espectroscopia por ressonância magnética de prótons, no diagnóstico diferencial de adenomas adrenais. Materiais e Métodos: Estudo prospectivo envolvendo 97 pacientes com nódulos ou massas adrenais. O índice de intensidade do sinal (SII) foi calculado como [(intensidade do sinal na imagem em fas...
Source: Radiologia Brasileira - April 17, 2020 Category: Radiology Source Type: research
