Small Nodules Detected on Chest Radiography

Ketai, Loren H.; Malby, Mathurn; Jordan, Kirk G.; Meholic, Andrew J.; Locken, Julie A

doi:10.1378/chest.118.3.610

Cited by 28 publications

(13 citation statements)

References 10 publications

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“…(17) found that nodules <7 mm in diameter at chest radiography were very likely to be calcified, particularly if the nodule appeared to be as dense as or denser than the adjacent rib ( Figure 16A). These data correlate fairly well with the notion that primary bronchogenic carcinomas, which are typically non-calcified, are not visible on chest radiographs when <1 cm in size (2,17,18).…”

Section: Nodule Sizesupporting

confidence: 82%

Imaging Evaluation of the Solitary Pulmonary Nodule

Tassel

Gotway

et al. 2011

Clinical Pulmonary Medicine

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Section: Nodule Sizesupporting

confidence: 82%

Imaging Evaluation of the Solitary Pulmonary Nodule

Tassel

Gotway

et al. 2011

Clinical Pulmonary Medicine

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“…CT allowed detection of metastases in two cases in the present study, thus showing greater precision than the plain radiographic examination that it is considered less sensitive for detection of small lesions [7,8,16,27]. In a retrospective study of 18 dogs with pulmonary metastatic neoplasia, the smallest size to detect pulmonary nodules on CT images was 1 mm, compared with 7-9 mm on radiographs [8].…”

Section: Discussionmentioning

confidence: 92%

Survey radiography and computerized tomography imaging of the thorax in female dogs with mammary tumors

et al. 2010

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BackgroundAccurate early diagnosis of lung metastases is important for establishing therapeutic measures. Therefore, the present study aimed to compare survey thoracic radiographs and computerized tomography (CT) scans to specifically identify lung metastases in female dogs with mammary tumors.MethodsTwenty-one female dogs, weighing 3 to 34 kg and aged from 5 years to 14 years and 10 months, with mammary tumors were studied. In all dogs before the imaging examinations, fine-needle aspiration cytology of the mammary tumors was performed to confirm the diagnosis. Three-view thoracic radiographs were accomplished: right lateral, left lateral and ventrodorsal views. Sequential transverse images of the thorax were acquired on a spiral Scanner, before and after intravenous bolus injection of nonionic iodine contrast. Soft-tissue and lung windows were applied. All the mammary tumors were surgically removed and examined histologically.ResultsThe correlation between the cytological and histological results regarding presence of malignancy was observed in only 17 cases. In radiographic examinations, no dog displayed signs of lung metastases or thorax chest lesions. CT detected lung metastasis in two cases, while small areas of lung atelectasis located peripherally were found in 28.57% of the dogs.ConclusionIn this study population, spiral CT showed higher sensitivity than chest radiographies to detect lung metastasis; this indicates that CT should be performed on all female dogs with malignant mammary tumors.

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“…CT is more sensitive to detect a solitary pulmonary nodule with a diameter of less than 3 mm. However, percentage of detection is about 1 %, while that of radiograph is about 0.2 % (Ketai et al 2000 ). This is one explanation for missed lung cancer.…”

Section: Chest Radiograph Limitations In Diseasementioning

confidence: 93%