Clinical imaging
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Case Reports
Giant bronchogenic cyst masquerading as tension pneumothorax. Radiographic and CT findings.
Pulmonary bronchogenic cysts with tracheobronchial communication may occasionally mimic tension pneumothorax leading to unnecessary thoracostomy. We describe such a case to emphasize that cautious identification of the direction of displacement of the collapsed lung tissue on chest radiograph or computed tomography (CT) may help in differentiating these two diseases. Tension pneumothorax should lead to centripetal compression of the ipsilateral lung toward the hilum while giant bronchogenic cysts result in centrifugal displacement of the adjacent lung away from the hilum.
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Intercostal lung herniation is a rare complication of trauma, best demonstrated by computed tomography. Most intercostal lung herniations are the result of direct trauma to the chest wall or occur at sites of prior percutaneously placed chest tubes. We present two cases of acquired intercostal lung herniation.
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The use of CT guidance in performing transthoracic needle biopsy is well established. We evaluated its accuracy in the diagnosis of small solitary nodules and found it to be highly accurate regardless of size or location. While specific benign diagnoses were uncommon, additional confidence in a benign diagnosis can be gained by careful analysis of needle tip location using strict CT criteria.
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Case Reports Comparative Study
MR imaging of multiple sclerosis simulating brain tumor.
Multiple sclerosis may sometimes present as a mass lesion that is indistinguishable from brain tumor both clinically and radiologically. We describe two cases of multiple sclerosis simulating brain tumor on computed tomography (CT) scans and magnetic resonance (MR) images, one of which was proved and another was suggestive to be demyelinating disease by biopsy. Steroid therapy produced regression of the lesions of MR images and CT scans. Our cases and others in the literature suggest strategies for detecting multiple sclerosis presenting as a mass lesion.
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Case Reports
Acquired intralobar bronchopulmonary sequestration secondary to occluding endobronchial carcinoid tumor.
We present the imaging findings of a 29-year-old man with an intralobar sequestration of the posterior segment of the left lower lung lobe, occurring distal to and sharing parasitized blood supply with a proximal occluding endobronchial carcinoid tumor. The etiology and pathogenesis of intralobar bronchopulmonary sequestration are discussed.