纵隔囊肿的CT诊断与鉴别诊断

目的提高纵隔囊肿的诊断与鉴别诊断水平。方法收集经手术病理证实的纵隔囊肿36例,分析其CT表现。结果所有病例CT表现均为边缘清晰、囊壁菲薄、内为不强化的水样密度肿块。其中神经肠源性囊肿1例、支气管囊肿12例、食管囊肿2例、心包囊肿5例、皮样囊肿7例、淋巴管囊肿4例、胸腺囊肿4例、非特异性囊肿1例。结论根据CT平扫和增强扫描上特征性表现,可较正确地作出纵隔囊肿的诊断,并与其它囊性病变鉴别。

Diagnosis and Differential Diagnosis of Mediastinal Cyst

Objective To improve the diagnosis and differential diagnosis of mediastinal cysts.Methods 36 patients with mediastinal cyst proved by surgery and pathology were collected, and CT findings were analyzed retrospectively.Results In all 36 cases,CT defined the masses with clear margin, thin wall and fluid-like density content which had no enhancement after intravenous contrast administration. There were neurenteric cyst(n=1), bronchial cyst(n=12), esophageal cyst(n=2), pericardial cyst(n=5), dermoid cyst(n=7), lymphangioma(n=4), thymic cyst(n=4) and non-special cyst(n=1). Conclusion The diagnosis of mediastinal cyst and differential diagnosis from other cystic lesions can be made according to the characteristics on plain and post-contrast CT scans.