Update: the radiographic features of pulmonary tuberculosis

Woodring, John H.; Vandiviere, H. M.; Fried, A M; Dillon, Marcus L.; Williams, Terri; Melvin, Irene G.

doi:10.2214/ajr.146.3.497

Cited by 262 publications

(190 citation statements)

References 15 publications

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“…Esse achado é habitualmente relatado na forma pós-primária, mas também pode ocorrer na forma primária (7,(13)(14)(15) . No trabalho de Woodring et al (7) , o envolvimento de dois ou mais lobos ocorreu em 87,5% dos casos de tuberculose pós-primária e em 23,7% na forma primária.…”

Section: Discussionunclassified

“…Radiologicamente, a tuberculose pulmonar pode apresentar-se de diversas formas (7) . Apesar de a radiografia de tórax poder oferecer informações sobre a atividade da doença, algumas alterações parenquimatosas mínimas podem não ser identificadas, principalmente em estágios iniciais da doença, em que aquela pode ser normal (4,8) .…”

Section: Introductionunclassified

“…A cavitação foi um achado comum, ocorrendo em 67% dos pacientes, sendo múltiplas em 53% dos casos e de paredes espessas e bordas irregulares em 86%, como habitualmente encontrado na literatura (4,5,7,13,14) . Poey et al (13) destacaram, em um estudo com 27 pacientes, que todas as cavidades (100%) apresentavam paredes espessas e que estas tornavam-se mais finas com o tratamento.…”

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“…Woodring et al (7) relataram que 20% das cavidades apresentavam nível líquido e Poey et al (13) observaram freqüência ainda maior, chegando a ocorrer em 25% dos casos.…”

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Tuberculose pulmonar: achados na tomografia computadorizada de alta resolução do tórax em pacientes com doença em atividade comprovada bacteriologicamente

Campos¹,

Marchiori²,

Rodrigues³

2002

J. Pneumologia

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Objetivo: Descrever os achados em pacientes com tuberculose pulmonar em atividade na tomografia computadorizada de alta resolução e o padrão de distribuição das lesões pelo parênquima pulmonar.Casuística e método: Foram analisadas retrospectivamente as tomografias de alta resolução de 42 pacientes com diagnóstico bacteriológico de tuberculose pulmonar ou forte suspeita clínica, com posterior confirmação bacteriológica. Resultados: Os principais sinais sugestivos de atividade encontrados foram nódulos do espaço aéreo (83%), nódulos centrolobulares (74%), aspecto de árvore em brotamento (67%), cavitações (67%), espessamento das paredes brônquicas (55%), consolidações (48%), opacidade em vidro fosco (21%), e espessamento do interstício pulmonar (9%). Conclusão: A tomografia computadorizada de alta resolução do tórax pode sugerir fortemente atividade da doença, sendo particularmente útil nos pacientes com baciloscopias negativas e/ou radiografias indeterminadas, permitindo a instituição de tratamento adequado, antes mesmo do crescimento da micobactéria em meio de cultura. (J Pneumol 2002;28(1):23-9) Pulmonary tuberculosis: findings on high resolution computerized tomography of active disease on patients with bacteriological confirmation Background: The aim of this study was to describe the signs of active tuberculosis in patients submitted to high resolution computerized tomography and the distribution of lesions along the pulmonary parenchyma. Material and methods: The high resolution CTs performed on 42 patients with tuberculosis either bacteriologically diagnosed or clinical suspected and later confirmed by bacteriological tests were studied. Results: The signs of disease activity observed were airspace nodule (83%), centrilobular nodule (74%), tree-in-bud pattern (67%), cavitations (67%), bronchial thickening (55%), parenchymal consolidations (48%), ground glass opacity (21%) and thickening of the inter and intralobular septa (9%). Conclusion: High resolution computed tomography can be strongly suggestive of disease activity, is particularly helpful in patients with negative smear and/or undetermined radiographs, and allows the establishment of proper treatment, even before mycobacteria are identified in means of culture.

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Section: Discussionunclassified

Section: Introductionunclassified

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“…Woodring et al (7) relataram que 20% das cavidades apresentavam nível líquido e Poey et al (13) observaram freqüência ainda maior, chegando a ocorrer em 25% dos casos.…”

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Tuberculose pulmonar: achados na tomografia computadorizada de alta resolução do tórax em pacientes com doença em atividade comprovada bacteriologicamente

Campos¹,

Marchiori²,

Rodrigues³

2002

J. Pneumologia

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“…CT is more sensitive than chest radiography for making the diagnosis and characterizing the cases of both subtle and disseminated parenchymal dis-ease and mediastinal lymphadenopathy that are predominantly situated in peripheral subregions. CT is also more sensitive for the evaluation of cases of tuberculous effusion, emphysema, and bronchopleural fistula that are not evident on plain radiographs [8][9][10][11][12]. The increased use of CT, and in particular helical CT, for higher resolution and higher definition of internal structures for the diagnosis of suspected PTB before treatment, has raised concerns about the radiation dose and associated cancer risk for exposed individuals.…”

Section: Introductionmentioning

confidence: 99%

Radiation dose and cancer risk estimates in helical CT for pulmonary tuberculosis infections

Adeleye

Chetty

2017

Open Physics

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Abstract:The preference for computed tomography (CT) for the clinical assessment of pulmonary tuberculosis (PTB) infections has increased the concern about the potential risk of cancer in exposed patients. In this study, we investigated the correlation between cancer risk and radiation doses from different CT scanners, assuming an equivalent scan protocol. Radiation doses from three 16-slice units were estimated using the CT-Expo dosimetry software version 2.4 and standard CT scan protocol for patients with suspected PTB infections. The lifetime risk of cancer for each scanner was determined using the methodology outlined in the BEIR VII report. Organ doses were significantly different (P < 0.05) between the scanners. The calculated effective dose for scanner H2 is 34% and 37% higher than scanners H3 and H1 respectively. A high and statistically significant correlation was observed between estimated lifetime cancer risk for both male (r 2 = 0.943, P < 0.05) and female patients (r 2 = 0.989, P < 0.05). The risk variation between the scanners was slightly higher than 2% for all ages but was much smaller for specific ages for male and female patients (0.2% and 0.7%, respectively). These variations provide an indication that the use of a scanner optimizing protocol is imperative.

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