Brazilian Journal of Pulmonology

ISSN (on-line): 1806-3756 | ISSN (printed): 1806-3713

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Diffuse abnormalities of the trachea: computed tomography findings

Alterações difusas da traquéia: aspectos na tomografia computadorizada

Edson Marchiori, Aline Serfaty Pozes, Arthur Soares Souza Junior, Dante Luiz Escuissato, Klaus Loureiro Irion, César de Araujo Neto, Jorge Luiz Barillo, Carolina Althoff Souza, Gláucia Zanetti

J Bras Pneumol.2008;34(1):47-54

Abstract PDF PT PDF EN Portuguese Text

The aim of this pictorial essay was to present the main computed tomography findings seen in diffuse diseases of the trachea. The diseases studied included amyloidosis, tracheobronchopathia osteochondroplastica, tracheobronchomegaly, laryngotracheobronchial papillomatosis, lymphoma, neurofibromatosis, relapsing polychondritis, Wegener's granulomatosis, tuberculosis, paracoccidioidomycosis, and tracheobronchomalacia. The most common computed tomography finding was thickening of the walls of the trachea, with or without nodules, parietal calcifications, or involvement of the posterior wall. Although computed tomography allows the detection and characterization of diseases of the central airways, and the correlation with clinical data reduces the diagnostic possibilities, bronchoscopy with biopsy remains the most useful procedure for the diagnosis of diffuse lesions of the trachea.

 


Keywords: Thoracic diseases; Tracheal diseases; Tomography, X-ray computed; Trachea.

 


Clinical application of CT and CT-guided percutaneous transthoracic needle biopsy in patients with indeterminate pulmonary nodules

Aplicação clínica da TC e biópsia transtorácica percutânea guiada por TC em pacientes com nódulos pulmonares indeterminados

Luciana Vargas Cardoso, Arthur Soares Souza Júnior

J Bras Pneumol.2014;40(4):380-388

Abstract PDF PT PDF EN Portuguese Text

Objective: To investigate the clinical application of CT and CT-guided percutaneous transthoracic needle biopsy (CT-PTNB) in patients with indeterminate pulmonary nodules (IPNs). Methods: We retrospectively studied 113 patients with PNs undergoing CT and CT-PTNB. Variables such as gender, age at diagnosis, smoking status, CT findings, and CT-PTNB techniques were analyzed. Data analysis was performed with the Student's t-test for independent samples the chi-square test, and normal approximation test for comparison of two proportions. Results: Of the 113 patients studied, 68 (60.2%) were male and 78 (69%) were smokers. The diameter of malignant lesions ranged from 2.6 cm to 10.0 cm. Most of the IPNs (85%) were located in the peripheral region. The biopsied IPNs were found to be malignant in 88 patients (77.8%) and benign in 25 (22.2%). Adenocarcinoma was the most common malignant tumor, affecting older patients. The IPN diameter was significantly greater in patients with malignant PNs than in those with benign IPNs (p < 0.001). Having regular contour correlated significantly with an IPN being benign (p = 0.022), whereas spiculated IPNs and bosselated IPNs were more often malignant (in 50.7% and 28.7%, respectively). Homogeneous attenuation and necrosis were more common in patients with malignant lesions (51.9% and 26.9%, respectively) Conclusions: In our sample, CT and CT-PTNB were useful in distinguishing between malignant and benign IPNs. Advanced age and smoking were significantly associated with malignancy. Certain CT findings related to IPNs (larger diameter, spiculated borders, homogeneous attenuation, and necrosis) were associated with malignancy.

 


Keywords: Solitary pulmonary nodule; Tomography; Image-guided biopsy.

 


Thoracic calcifications on magnetic resonance imaging: correlations with computed tomography

Calcificações torácicas na ressonância magnética: correlações com a tomografia computadorizada

Juliana Fischman Zampieri1,a, Gabriel Sartori Pacini1,b, Matheus Zanon1,c, Stephan Philip Leonhardt Altmayer1,2,d, Guilherme Watte1,2,e, Marcelo Barros1,2,f Evandra Durayski2,g, Gustavo de Souza Portes Meirelles3,h, Marcos Duarte Guimarães4,5,i, Edson Marchiori6,j, Arthur Soares Souza Junior7,k, Bruno Hochhegger1,2,l

J Bras Pneumol.2019;45(4):e20180168-e20180168

Abstract PDF PT PDF EN Portuguese Text

Objective: To identify the characteristics of thoracic calcifications on magnetic resonance (MR) imaging, as well as correlations between MR imaging and CT findings. Methods: This was a retrospective study including data on 62 patients undergoing CT scans and MR imaging of the chest at any of seven hospitals in the Brazilian states of Rio Grande do Sul, São Paulo, and Rio de Janeiro between March of 2014 and June of 2016 and presenting with calcifications on CT scans. T1- and T2-weighted MR images (T1- and T2-WIs) were semiquantitatively analyzed, and the lesion-to-muscle signal intensity ratio (LMSIR) was estimated. Differences between neoplastic and non-neoplastic lesions were analyzed. Results: Eighty-four calcified lesions were analyzed. Mean lesion density on CT was 367 ± 435 HU. Median LMSIRs on T1- and T2-WIs were 0.4 (interquartile range [IQR], 0.1-0.7) and 0.2 (IQR, 0.0-0.7), respectively. Most of the lesions were hypointense on T1- and T2-WIs (n = 52 [61.9%] and n = 39 [46.4%], respectively). In addition, 19 (22.6%) were undetectable on T1-WIs (LMSIR = 0) and 36 (42.9%) were undetectable on T2-WIs (LMSIR = 0). Finally, 15.5% were hyperintense on T1-WIs and 9.5% were hyperintense on T2-WIs. Median LMSIR was significantly higher for neoplastic lesions than for non-neoplastic lesions. There was a very weak and statistically insignificant negative correlation between lesion density on CT and the following variables: signal intensity on T1-WIs, LMSIR on T1-WIs, and signal intensity on T2-WIs (r = −0.13, p = 0.24; r = −0.18, p = 0.10; and r = −0.16, p = 0.16, respectively). Lesion density on CT was weakly but significantly correlated with LMSIR on T2-WIs (r = −0.29, p < 0.05). Conclusions: Thoracic calcifications have variable signal intensity on T1- and T2-weighted MR images, sometimes appearing hyperintense. Lesion density on CT appears to correlate negatively with lesion signal intensity on MR images.

 


Keywords: Calcification, physiologic; Thorax/diagnostic imaging; Tomography, X-ray computed; Magnetic resonance imaging.

 


Illustrated Brazilian consensus of terms and fundamental patternsin chest CT scans

Consenso brasileiro ilustrado sobre a terminologia dos descritores e padrões fundamentais da TC de tórax

C. Isabela S. Silva, Edson Marchiori, Arthur Soares Souza Júnior, Nestor L. Müller, Comissão de Imagem da Sociedade Brasileirade Pneumologia e Tisiologia

J Bras Pneumol.2010;36(1):99-123

Abstract PDF PT PDF EN Portuguese Text

The objective of this new Brazilian consensus is to update and to continue the standardization of the principal terms and fundamental patterns in chest CT scans in Portuguese. There is a succinct definition of the principal terms used to describe chest CT findings, as well as illustrations of classic examples. The group of authors comprised radiologists specializing in chest radiology and holding membership in the Brazilian College of ­Radiology and Diagnostic Imaging, as well as pulmonologists having a special interest in diagnostic imaging and holding membership in the Brazilian Thoracic Association.

 


Keywords: Lung; Consensus; Tomography.

 


Curso de diagnóstico por imagem do tórax

Arthur Soares Souza Junior

J Bras Pneumol.1999;25(1):35-49

PDF PT



Hydrostatic pulmonary edema: high-resolution computed tomography aspects

Edema pulmonar hidrostático: aspectos na tomografia computadorizada de alta resolução

Cláudia Maria Cunha Ribeiro, Edson Marchiori, Rosana Rodrigues, Emerson Gasparetto, Arthur Soares Souza Júnior, Dante Escuissato, Luiz Felipe Nobre, Gláucia Zanetti, César de Araujo Neto, Klaus Irion

J Bras Pneumol.2006;32(6):515-522

Abstract PDF PT PDF EN Portuguese Text

Objective: This study aimed to use high-resolution computed tomography scans of the chest to characterize the principal alterations occurring in cases of hydrostatic pulmonary edema. Methods: A retrospective analysis was made of the tomography scans of 15 patients presenting clinical profiles of hydrostatic pulmonary edema. The cases were divided into five groups by etiology: congestive heart failure (n = 7); acute mitral valve disease (n = 2); acute myocardial infarction (n = 2); myocarditis (n = 2); and fibrosing mediastinitis (n = 2). Results: The principal findings in the cases of hydrostatic pulmonary edema were ground-glass opacities (in 100%), interlobular septal thickening (in 100%), pleural effusion (in 87%) and peribronchovascular interstitial thickening (in 80%). Other, less common, findings were increased blood vessel diameter, consolidations and air-space nodules. Conclusion: The predominant pattern found in the patients studied was that of ground-glass opacities accompanied by interlobular septal thickening (mosaic attenuation pattern) and bilateral (predominantly right-sided) pleural effusion.

 


Keywords: Pulmonary edema; Tomography, X-ray computed; Lung diseases

 


Rhodococcus equi infection in acquired immunodeficiency syndrome. Computed tomography aspects

Infecção pulmonar pelo Rhodococcus equi na síndrome da imunodeficiência adquirida. Aspectos na tomografia computadorizada

Edson Marchiori, Renato Gonçalves de Mendonça, Domenico Capone, Elza Maria de Cerqueira, Arthur Soares Souza Júnior, Gláucia Zanetti, Dante Escuissato, Emerson Gasparetto

J Bras Pneumol.2006;32(5):405-409

Abstract PDF PT PDF EN Portuguese Text

Objective: To present the computed tomography aspects of Rhodococcus equi pneumonia in seven patients with acquired immunodeficiency syndrome. Methods: A retrospective study of the computed tomography scans of seven patients with acquired immunodeficiency syndrome and Rhodococcus equi infection. Results: The most common findings were consolidation (n = 7), consolidation with cavitation (n = 6), ground glass opacities (n = 6), peribronchial nodules (n = 4) and centrilobular nodules presenting a "tree-in-bud" pattern (n = 3). Conclusion: The most common finding in patients with Rhodococcus equi pulmonary infection and acquired immunodeficiency syndrome was consolidation with cavitation.

 


Keywords: Acquired immunodeficiency syndrome; Rhodococcus equi; Actimomycetales infections; Lung diseases, fungal; Tomography, emission-computed

 


Magnetic resonance of the lung: a step forward in the study of lung disease

Ressonância magnética de pulmão: um novo passo no estudo das doenças pulmonares

Bruno Hochhegger, Edson Marchiori, Klaus Irion, Arthur Soares Souza Junior, Jackson Volkart, Adalberto Sperb Rubin

J Bras Pneumol.2012;38(1):105-115

Abstract PDF PT PDF EN Portuguese Text

Magnetic resonance imaging (MRI) of the lung has progressed tremendously in recent years. Because of improvements in speed and image quality, MRI is now ready for routine clinical use. The main advantage of MRI of the lung is its unique combination of structural and functional assessment in a single imaging session. We review the three major clinical indications for MRI of the lung: staging of lung tumors; evaluation of pulmonary vascular disease; and investigation of pulmonary abnormalities in patients who should not be exposed to radiation.

 


Keywords: Magnetic resonance imaging; Lung; Lung diseases; Carcinoma, non-small-cell lung; Lung diseases, interstitial; Pneumonia.

 


 

 


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