lacrimal sac


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

lacrimal sac

[′lak·rə·məl ‚sak]
(anatomy)
The dilation at the upper end of the nasolacrimal duct within the medial canthus of the eye. Also known as dacryocyst.
References in periodicals archive ?
In the middle ages, treatment for chronic dacryocystitis was drainage of abscess externally and extirpation of the lacrimal sac.
11 Inadequate exposure of lacrimal sac and injury to surrounding nasal mucosa are considered to be the common causes of surgical failure.
Both upper and lower punctum were dilated and 20 gauge vitrectomy light was passed through the upper punctum into the lacrimal sac.
The site of obstruction was evaluated with regurgitation and lacrimal sac irrigation test.
Rhinoplasties involving lateral osteotomy may cause problems like poor aesthetical outcomes, airway obstruction, lacrimal sac injuries and temporary lacrimal duct obstruction.
The lacrimal sacs can't drain your tears fast enough.
ADC was defined clinically as symptoms of fulminant lacrimal sac inflammation/infection, erythema, pain and discharge for < 2 weeks' duration prior to initial presentation.
After lacrimal sac massage, static views were then taken routinely at 5, 10, 15, and 20 minutes.
While primarily a nasal neoplasm, cases of an inverted papilloma involving the temporal bone, pharynx, nasopharynx, and lacrimal sac have been reported.
Though several intra-nasal pleomorphic adenomas have been described, to our knowledge this is the first reported case of a pleomorphic adenoma arising from the mucosa of lateral nasal wall over the lacrimal bone without invading the lacrimal sac.
The lacrimal pump mechanism involves contraction of the orbicularis muscle to close the eye, which creates negative pressure in the lacrimal sac.
The ocular adnexa are those anatomic structures that surround the eyeball, protect it from injury, and facilitate its functioning; this includes the conjunctiva (palpebral and bulbar), orbital cavity soft tissues, main lacrimal gland, accessory lacrimal glands, nasolacrimal drainage system (including the upper and lower canaliculi, lacrimal sac, and nasolacrimal duct), and the eyelid.