[Application value of computed tomography dacryocystography in children lacrimal diseases].
OBJECTIVE
To explore the application value of computed tomography (CT) dacryocystography in children lacrimal diseases.


METHODS
Retrospective case series. The results of CT dacryocystography in 300 children (395 eyes) with lacrimal diseases from October 2009 to October 2011 in Beijing Children Hospital were analyzed retrospectively.


RESULTS
Among 240 children (326 eyes) with congenital nasolacrimal duct obstruction, the sites of obstruction were in the common canaliculus or upper position in 6 eyes (1.8%), in the lacrimal sac in 38 eyes (11.7%), at the borderline between lacrimal sac and nasolacrimal duct in 213 eyes (65.3%) and at the terminal of nasolacrimal duct in 69 eyes (21.2%). CT dacryocystography could display the obstruction position of lacrimal duct in congenital nasolacrimal duct obstruction. In unilateral congenital nasolacrimal duct obstruction, CT dacryocystography indicated that nasolacrimal canal in affected side were much larger than that in normal side. It could show the destruction of lacrimal soft tissue and the fossa of lacrimal sac in traumatic lacrimal duct obstruction. CT dacryocystography was also the main subsidiary method for the diagnosis of congenital dacryocystocele, congenital nasolacrimal canal agenesis and lacrimal sac diverticula.


CONCLUSIONS
CT dacryocystography can provide important aspects for the diagnosis and treatment of children lacrimal diseases. Therefore, it can be used as an important image examination method in children with lacrimal diseases.
National Key Discipline of Pediatrics (Capital Medical University), Ministry of Education, Department of Ophthalmology, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China.
Gang
G
Yu
Cheng-yue
CY
Zhang
Yan-hui
YH
Cui
Yun-wei
YW
Fan
Wen-hong
WH
Cao
Qi
Q
Lin
Ya
Y
Qi
Jie
J
Cui
Man
M
Hu
Wen
W
Liu
Qian
Q
Wu
D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007765:Lacrimal Apparatus / Q000000981:diagnostic imaging; D007766:Lacrimal Apparatus Diseases / Q000000981:diagnostic imaging*; D007767:Lacrimal Duct Obstruction / Q000000981:diagnostic imaging; D008297:Male; D009301:Nasolacrimal Duct / Q000000981:diagnostic imaging; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed