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心包囊肿１０例，右心膈角７例，左心膈角１例，右前中纵隔２例。１０例均作了Ｘ线检查，误诊５例。超声检查５例，误诊胸膜腔积液１例，漏诊１例。ＣＴ检查４例，误诊皮样囊肿１例。Ｘ线检查应作多轴位，多体位观察，密切结合Ｂ超和ＣＴ检查，可提高确诊率。
There were 10 cases of pericardial cyst, 7 cases of right heart angle, 1 case of left heart angle, and 2 cases of right anterior middle mediastinum. X-ray examination was performed in 10 cases and misdiagnosed in 5 cases. Ultrasound examination in 5 cases, misdiagnosis of pleural effusion in 1 case, missed diagnosis in 1 case. CT examination in 4 cases, misdiagnosis of dermoid cyst in 1 case. X-ray examination should be multi-axial, multi-position observation, closely combined with B-ultrasound and CT examination, can improve the diagnosis rate.