Nasolacrimal duct cyst

Nasolacrimal duct cyst describes a unilateral or bilateral congenital cyst of the nasolacrimal duct, which is almost always associated with dacryocystocele, presenting most commonly at birth or a few weeks of age (but rarely presenting in adulthood) as a benign, grayish blue mass in the inferomedial canthus or in the nasal cavity, that can cause epiphora, dacryocystitis (inflammation of the lacrimal sac) and nasal obstruction. It is more commonly reported in females.

Vascular dilatation

Abnormal outpouching or sac-like dilatation in the wall of an atery, vein or the heart.

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PMID (PMCID)
27097399	MIXED_SAMPLE	Infant, Newborn
	Management of congenital dacryocystocele: report of 3 clinical cases.
	Rogister F, Goffart Y, Daele J. B-ENT. 2016;12(1):83-8.
	These dilatations corresponded to unilateral or bilateral dacryocystoceles, with or without complications.
26724215	MIXED_SAMPLE	Infant, Newborn
	[Congenital lacrimonasal duct cyst: Do not forget this radiological and clinical entity].
	Braun JJ, Debry C, Donato L, Riehm S. Arch Pediatr. 2016;23(2):192-6.
	Although obstruction of the lacrimonasal duct is a fairly common finding in newborns, development of a dacryocystocele (nasolacrimal duct cyst) is uncommon and is caused by stenosis in the proximal and distal area of the nasolacrimal duct leading to a cystic dilatation.
26724215	MIXED_SAMPLE	Infant, Newborn
	[Congenital lacrimonasal duct cyst: Do not forget this radiological and clinical entity].
	Braun JJ, Debry C, Donato L, Riehm S. Arch Pediatr. 2016;23(2):192-6.
	Although obstruction of the lacrimonasal duct is a fairly common finding in newborns, development of a dacryocystocele (nasolacrimal duct cyst) is uncommon and is caused by stenosis in the proximal and distal area of the nasolacrimal duct leading to a cystic dilatation.
24592005	OTHER
	Prenatal early diagnosis of dacryocystocele, a case report and review of literature.
	Bingol B, Basgul A, Guducu N, Isci H, Dunder I. J Turk Ger Gynecol Assoc. 2011;12(4):259-62.
	Dacryocystocele (mucocele, amniocele) is a relatively rare variant of nasolacrimal duct obstruction which refers to the cystic dilatation of lacrimal pathway above and below the lacrimal sac.
19902856	FEMALE	Adult
	Endonasal endoscopic dacryocystorhinostomy for a primary dacryocystocele in an adult.
	Eloy P, Martinez A, Leruth E, Levecq L, Bertrand B. B-ENT. 2009;5(3):179-82.
	A dacryocystocele refers to a sterile cystic dilatation of the lacrimal sac resulting from a complete obstruction of the lacrimal pathway above and below the lacrimal sac.