Result Among 44 cases,18 cases were located in neck,11 in mesentery,7 in refroperitoneum, 5 in posterior chest wall ,2 in mediastinal and 1 in left axilla and neck and mediastinum at the same time.

• 结果:发生在颈部18例,肠系膜11例,腹膜后7例,后胸壁5例,纵隔2例,左侧腋窝并同时累及颈和纵隔1例。表现为囊性、边界清楚或不清的肿块影。