Abstract: 【Objective】To investigate the imaging features of mediastinal cyst,and optimize imaging methods.【Methods】 The imaging features of 38 cases of mediastinal cyst,including 2 cases of thymic cysts,15 cases of cystic teratoma,9 cases of bronchogenic cysts,7 cases of pericardial cysts,2 cases of esophageal cysts,3 cases of cystic lymphangioma,were retrospectively analyzed.All cases underwent lateral chest films,29 of which underwent CT scan,and one case underwent MRI.【Results】 Typical extrapleural sign showed that cysts located in the mediastinum.The density,mutual squeeze sign and the contents of the capsule could not enhance cystic features.Diagnosis and classification were done based on the location of cysts and accompanied changes.Atypical extrapleural sign as well as Ditch sign was one of the reasons of misdiagnosis by chest X-ray.Location of the cyst was not typical.The thickness of cyst wall and high density of cyst in CT images were the main reasons for misdiagnosis.【Conclusion】 Careful analysis of imaging characteristics of mediastinal cyst and awareness of different manifestations of different types of cysts are the key to the correct diagnosis.Chest X-ray of mediastinal cyst is still the preferred method,but CT and MRI are the best way of the detection of lesions,location,classification and qualitation diagnosis.
Publication Year: 2007
Publication Date: 2007-01-01
Language: en
Type: article
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