Journal of computer assisted tomography
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J Comput Assist Tomogr · Jun 1984
Case ReportsCT differentiation of thoracic aortic aneurysms from pulmonary masses adjacent to the mediastinum.
Paramediastinal masses adjacent to the aorta require a diagnostic evaluation to differentiate between tumor and aneurysm. It has been suggested that neoplasm may enhance sufficiently to be confused with a vascular structure or that a clot filled aneurysm may simulate a neoplasm by not filling with contrast medium. ⋯ The CT examination also accurately visualized the point of communication of the aneurysm with the aorta, defined the relationship of the aneurysm to vital mediastinal structures for planning surgical resection, and helped plan the approach for percutaneous transthoracic needle aspiration when tumor was suspected. Bolus injection CT represents a rational alternative to aortography for mediastinal paraaortic masses.
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This investigation used computed tomography (CT) to study the normal anatomy of the hindfoot and to demonstrate abnormalities in patients with rheumatoid arthritis, pes planovalgus , old trauma, and soft-tissue masses. The hindfeet of 10 normal volunteers and 17 patients were scanned in the coronal and axial transverse planes. The articular surfaces of the tibia, talus, and calcaneus were assessed, as were the relationships of each bone to the others. ⋯ Bony talocalcaneal fusions, fractures, and the erosions of pigmented villonodular synovitis were detected on CT. The pattern of postoperative bone healing after attempted subtalar fusion could be demonstrated. We conclude that CT is a useful tool for pre- and postoperative evaluation of the hindfoot.
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Four cases of pneumatosis intestinalis detected by computed tomography (CT) are described. Plain abdominal films obtained on the same day as CT failed to show pneumatosis in three of the four cases. ⋯ Evidence of pneumatosis should be carefully looked for in patients with acute abdominal pain referred for CT examination. Computed tomography may be a useful modality for the early diagnosis of bowel ischemia when plain abdominal films are noncontributory.
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J Comput Assist Tomogr · Apr 1984
Case ReportsDiscrepant opacification of the internal jugular veins: indicator of innominate vein occlusion on computed tomography of the neck.
Discrepant enhancement of an internal jugular vein on computed tomography during intravenous infusion of contrast material via an upper extremity vein constitutes an abnormal finding. We demonstrate that the greater degree of opacification of the internal jugular vein on the affected side is due to reversal of flow on that side and is indicative of occlusion of a major venous pathway proximally.
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J Comput Assist Tomogr · Apr 1984
Case ReportsTracheal and bronchial stenosis associated with mediastinal adenopathy in Wegener granulomatosis: CT findings.
The computed tomographic findings of mediastinal adenopathy and tracheal and bronchial stenosis associated with Wegener granulomatosis are reported in a young patient whose disease appeared limited to the airways and sinuses.