Secondary lymphangiectasia may be caused by granulomas or cancer causing lymphatic obstruction, or increased central venous pressure (CVP) causing abnormal lymph drainage.

• 继发性淋巴管扩张症可能由肉芽肿或癌症造成淋巴管阻塞引起，或由中心静脉压的升高造成的流淋巴液流动异常引起。