绝大多数淋巴管瘤出生时即可出现,通常发生在头、颈、腋窝,其中10％的颈部淋巴管瘤蔓延至纵隔。成人原发性纵隔淋巴管瘤不多见,通常表现为孤立的纵隔肿块,有关该病CT表现的报道更少。作者报道了3例该病的CT表现,第1例可见边界清楚的、多房、水样密度肿块,包绕纵隔组织,无纵隔移位及压迫表现;第2例可见气管右侧有边界清楚的、均匀的、水样密度肿块;第3例表现气管旁肿块伴囊内出血改变,5年内明显增大。 Most lymphangiomas can appear at birth, usually in the head, neck, armpits, and 10% of cervical lymphangioma spread to the mediastinum. Adult primary mediastinal lymphangioma is rare, usually as an isolated mediastinal mass, and there are fewer reports of CT findings of the disease. The authors reported CT findings in 3 cases. In the first case, a well-defined, multi-well, watery-density mass surrounded the mediastinum with no mediastinal displacement and oppression. The second case showed clear boundaries on the right side of the trachea. A homogeneous, watery-density mass was present; in the third case, the paratracheal mass with intracapsular hemorrhage was altered and significantly increased within 5 years.