Canalicular Cyst After Punctal Plug Insertion.

This study describes the case of a patient with a canalicular cyst after punctal plug insertion. A 73-year-old male patient presented with a cystic mass on the right lower eyelid. He had undergone bilateral punctal occlusion with an absorbable punctal plug for dry eye syndrome 8 years ago. The lesion was palpable on the medial side of the right lower eyelid, accompanied by ectropion but without any inflammatory signs. Incision and drainage were performed, and a reduction in the size of the cystic mass was observed. Dacryocystography revealed cystic dilation of the right lower canaliculus, and a lacrimal probing test revealed right lower canalicular obstruction, leading to the diagnosis of a canalicular cyst. If a patient who has undergone punctal occlusion with punctal plugs presents with a mass in the medial canthus, a canalicular cyst should be considered in the differential diagnosis.