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Lacrimal sac

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia, Hutchinson 0.03 sec.
lacrimal sac
n.
The upper portion of the nasolacrimal duct into which the two lacrimal ducts empty. Also called dacryocyst, tear sac.

Lacrimal sac
The dilated upper end of the nasolacrimal duct in which the lacrimal ducts empty.

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Rhinosporidiosis predominantly affects the mucous membranes of the nose and nasopharynx; it also occasionally involves the lips, palate, uvula, maxillary antrum, conjunctiva, lacrimal sac, epiglottis, larynx, trachea, bronchus, ear, scalp, skin, penis, vulva, and vagina.
The easiest way to identify the opening of the nasolacrimal duct is to put light digital pressure on the lacrimal sac at the medial canthus while simultaneously observing the inferior meatus with the endoscope.
Obstruction of the lacrimal system usually occurs in the distal portion of the lacrimal sac or in the nasolacrimal duct.
 
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