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.

Encephalocele

A neural tube defect characterized by sac-like protrusions of the brain and the membranes that cover it through openings in the skull.


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PMID (PMCID)
26509540
 FEMALE Infant, Newborn
[Dacryocystitis in a three-week-old girl].
Uth CC, Voorde PT, Boljanovic S.
Ugeskr Laeger. 2015;177(44):V04150369.
Dacryocystocele is a rare disease, which can be difficult to distinguish from haemangioma, dermoid cyst or encephalocele.
21331541
 FEMALE Adult
Prenatal ultrasound and histological diagnosis of fetal nasal glioma (heterotopic central nervous system tissue): report of a new case and review of the literature.
Tonni G, Lituania M, Bonasoni MP, De Felice C.
Arch Gynecol Obstet. 2011;283 Suppl 1:55-9.
Alternative diagnoses such as dacryocystocele, dermoid cyst, retinoblastoma or teratoma, hemangioma, and encephalocele that can not completely be excluded prenatally are discussed.
1399578
 OTHER Infant, Newborn
Nasal mass in a pediatric patient.
Reilly JR, Koopman CF, Cotton R.
Head Neck. 1992;14(5):415-8.
The consultants agreed that the differential diagnosis should focus on congenital masses, including an encephalocele, glioma, dermoid, hamartoma, hemangioma, rhabdomyosarcoma, neurofibroma, and nasolacrimal duct cyst.