Results All 4 cases demonstrated dilation of nasolacrimal duct,a cyst in the medial canthus,and a submucosal cyst within the nasal cavity.

• 结果典型CT表现为单侧或双侧不同程度的鼻泪管扩张以及与之相延续的内眦区囊肿和鼻腔内黏膜下囊肿。