However, it should be included in the differential diagnosis of lacrimal sac lesion, especially in patients with chronic epiphora and painless swelling of lacrimal sac.

• 然而在诊断泪囊肿瘤时，我们仍应该将其列为鑑别诊断之一，特别是当病人有长期溢泪以及泪囊的无痛肿块时。