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Although some overlap exists, nodule size is helpful in the differential diagnosis of infectious causes of nodules in immunocompromised patients. Patients whose nodules are all less than 10 mm in diameter are most likely to have a viral infection.
Thin-section reformatted helical CT delineated minute, radiographically occult fractures of the rib. Excluding fractures, helical CT can avoid further unnecessary examinations.
Thin-walled cysts can be seen in a small percentage of patients with subacute hypersensitivity pneumonitis. The cysts resemble those seen in lymphocytic interstitial pneumonia, and their pathogenesis is uncertain.
Registration of CT and FDG–PET datasets significantly improved the specificity of detecting metastatic disease. In addition, registration improved the radiologic staging of lung cancer patients when compared with CT or FDG–PET alone.
Enlarged mediastinal lymph nodes were observed in 81% of patients with a calculated ejection fraction of <35%, most commonly in the pretracheal group. The presence of the lymph nodes did not correlate with CT evidence of pulmonary edema.
Additional coronal images using low-milliamperage multidetector-row CT are effective in the diagnosis of bronchiectasis by providing enhanced detection rates and confidence to the distribution of lesions.
Five cases of chronic beryllium disease with predominant or isolated diffuse ground-glass lung opacities on computed tomography are reported with correlation to lung pathology. The ground-glass attenuation was either homogeneous and isolated (n = 1) or patchy and clearly predominant (n...
We report a rare case of an inverted left atrial appendage without prior cardiac surgery. A left atrial mass was incidentally found during routine echocardiography in a 19-year-old man with mitral valve prolapse. Echocardiography revealed a hyperechoic mass in the left atrium, and a neoplastic...
Carotid siphon calcifications are strong predictors of existing medical disease in simple cases. In patients with a combination of diseases, a strong interaction between covariates is noted, suggesting a more complex interaction contributing to the formation of carotid siphon disease.
Different characteristics of attenuation change on two-phase helical CT and delayed coronal CT can be helpful in differentiating between orbital lymphoma and SCIPT.
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