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.

Dermoid cyst

A congenital subcutaneous cyst that arises from entrapment of skin along the lines of embryonic fusion. In contrast to epidermal cysts, dermoid cysts tend to contain various adnexal structures such as hair, sebaceous, eccrine or apocrine glands. Dermoid cysts are present at birth, and are indolent, firm, deep, subcutaneous nodules. They are often located on the head and neck, and rarely in the anogenital area. Dermoid cysts are\nslowly progressive and can grow to a size of 1 to 4 cm.

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PMID (PMCID)
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.
	CT and MRI are equally sensitive in detecting dacryocystocele and are also useful for differential diagnosis for other cystic or tumoral nasal lesions such as meningoencephalocele, dermoid cyst, and glioma.
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.