Lacrimal fistula

Dacryocystitis mucus cysts or purulent cysts can communicate with the ethmoid sinus, forming a ethmoid sinus dacryocystic fistula. When the secretion is discharged from the nasal cavity through the ethmoid sinus, the cyst can shrink or even disappear, and the symptoms can be reduced. It is the same as nasal drainage surgery. Effect.

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