nasolacrimal duct cyst https://www.malacards.org/card/nasolacrimal_duct_cyst nasolacrimal mucocele 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. MEDGEN:1810477 GARD:0019944 MONDO:0015387 UMLS:C5575612 Orphanet:141083 dacryocele otorhinolaryngologic disease nasolacrimal duct disorder