Shin M S, Berland L L, Ho K J
J Comput Assist Tomogr. 1985 Mar-Apr;9(2):297-301.
Two cases of asymptomatic primary mediastinal cystic hygroma in adults are reported. The CT findings, including: paratracheal and paravertebral location; round, smooth, and sharp outline; homogeneous density with low attenuation number; compression of surrounding tissue without gross invasion; and lack of calcification, together with the superior mediastinal location are sufficiently characteristic to suggest the diagnosis.
报告了两例成人无症状原发性纵隔囊状水瘤病例。CT表现包括：气管旁和椎旁位置；圆形、边缘光滑且清晰；密度均匀，衰减值低；压迫周围组织但无明显侵犯；无钙化，再加上位于上纵隔，这些表现具有足够的特征性以提示诊断。
