Chronic diarrhea is almost always seen with lymphangiectasia, but most other signs are linked to low blood protein levels (hypoproteinemia), which causes low oncotic pressure.

• 慢性腹泻几乎发生于所有淋巴管扩张症患犬，大多数其他表现与低血蛋白水平（低蛋白血症）相关。