Wang James C, Cunningham Michael J
Department of Otolaryngology, Massachusetts Eye and Ear Infirmary, Boston, MA 02114-3096, USA.
Int J Pediatr Otorhinolaryngol. 2011 Mar;75(3):430-2. doi: 10.1016/j.ijporl.2010.11.026. Epub 2010 Dec 23.
Congenital impatency of the nasolacrimal drainage system is relatively common. Dacryocystocele formation is an infrequent variant of such congenital nasolacrimal duct obstruction (NLDO). Congenital dacryocystocele typically manifests as a mass in the medial canthal region; alternatively the nasolacrimal expansion may present solely intranasally as a nasolacrimal duct cyst. Despite the relative frequency of congenital NLDO, there have been few reported familial cases. We report here two female siblings with congenital dacryocystocele, and review the etiology and potential inherited predisposition to this comparatively rare entity.
先天性鼻泪管引流系统阻塞相对常见。泪囊膨出是先天性鼻泪管阻塞（NLDO）的一种罕见变异形式。先天性泪囊膨出通常表现为内眦部肿块；或者鼻泪管扩张可能仅在鼻腔内表现为鼻泪管囊肿。尽管先天性鼻泪管阻塞相对常见，但报道的家族性病例很少。我们在此报告两名患有先天性泪囊膨出的女性同胞，并回顾这种相对罕见疾病的病因及潜在的遗传易感性。
