胎儿鼻泪管囊肿的产前超声诊断及预后判断的临床研究、

Clinical research of prenatal ultrasonic diagnosis and prognosis of fetal dacryocystocele

目的探讨胎儿鼻泪管囊肿的声像图特征和预后及其相关性。方法回顾性分析我院51例产前超声诊断为鼻泪管囊肿的胎儿，观察其声像图特点，并随访至引产或出生后6个月。采用相关分析法分析囊肿大小和孕周的相关性，采用U检验比较胎儿的转归情况。结果鼻泪管囊肿检出率约0．47‰。声像图表现为内眦处囊性无回声结构。单侧多于双侧，左侧多于右侧。囊肿最大横径2．O～12．0mm，平均（5．9±2．2）mm，囊肿大小与孕周无相关性。单纯鼻泪管囊肿预后良好。结论胎儿鼻泪管囊肿有典型的声像图特点，产前超声可以作为鼻泪管囊肿诊断和随访的首选影像学检查。

Objective To discuss the ultrasonographic feature and prognosis of the fetal dacryocystocele and its correlation. Methods The ultrasonographic feature of 51 patients diagnosed as dacryocystocele prenatally by sonography were retrospectively analyzed. All fetus were followed up to induced labor or 6 months after birth. The correlation between the size and the gestational age were analyzed by correlation analysis method and compared the fetal prognosis adopt U test. Results The incidence of dacryocystocele diagnosed prenatally by ultrasound was about 0.47%0. The diagnosis was established by the detection of a cystic lesion in relation to the medial and inferior aspects of the fetal orbit. Unilateral dacryocystoceles were more often found than bilateral, and left more than right. The maximum diameter range from 2.0 mm to 12.0 mm, average （5.9± 2.2） mm. There is no correlation between cyst size and gestational age. Prognosis of isolated nasolacrimal duct cyst is good. Conclusions The fetal dacryocystocele have typical ultrasonographie feature, Ultrasound is a rapid and reliable method which can be used for diagnosis of daeryocystocele prenatally and follow-up after birth.