Dacryocystitis
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Dacryocystitis is infection of the tear (lacrimal) sac usually due to a blockage in the tear (nasolacrimal) duct.
The tear sac is a small chamber into which tears drain. The usual cause of dacryocystitis is a blockage of the nasolacrimal duct, which leads from the tear sac into the nose.
Dacryocystitis may occur suddenly (acute) or be longstanding (chronic).
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