165 Lymphangioma

Clinical Presentation

24-year-old woman with a palpable neck mass

Radiologic Findings

PA chest radiograph (Fig. 165.1) demonstrates a well-defined right middle-posterior mediastinal (paratracheal) mass that produces mass effect on the cervical and intrathoracic portions of the trachea. Contrast-enhanced chest CT (mediastinal window) (Figs. 165.2, 165.3) shows a multilocular cystic right neck mass of water attenuation contents with thin internal soft-tissue septa (Fig. 165.2) that extends into the mediastinum, insinuating between adjacent vascular structures (Fig. 165.3), and produces mass effect on the trachea and esophagus (Fig. 165.3).