"Double eyes" sign of congenital bilateral dacryocystoceles.
Dacryocystocele is caused by nasolacrimal duct obstruction and results in cystic dilatation of the proximal part of the nasolacrimal duct, which is located inferomedial to the orbit, leading to fluid accumulation. It is important to consider that persistent congenital bilateral dacryocystoceles may cause neonatal nasal obstruction resulting in respiratory difficulty, and large dacryocystoceles may require surgical drainage. Ultrasonography demonstrates that congenital bilateral dacryocystoceles and normal eyeballs prenatally resemble two pairs of cystic "lesions" of different sizes. We herein present a case of prenatally diagnosed isolated congenital bilateral dacryocystoceles and propose the new name of "double eyes" sign for this rare condition to create an impact on medical students and residents.
Department of Obstetrics and Gynecology, Nippon Medical School Tama Nagayama Hospital, 1-7-1 Nagayama, Tama, Tokyo, 206-8512, Japan. inde@nms.ac.jp.|Department of Obstetrics and Gynecology, Bern Forest Clinic, 4-3-1 Oyamagaoka, Machida, Tokyo, 194-0215, Japan. inde@nms.ac.jp.
Yusuke
Y
Inde
Department of Obstetrics and Gynecology, Bern Forest Clinic, 4-3-1 Oyamagaoka, Machida, Tokyo, 194-0215, Japan.
Ayumi
A
Ryu
Department of Obstetrics and Gynecology, Bern Forest Clinic, 4-3-1 Oyamagaoka, Machida, Tokyo, 194-0215, Japan.
Norihiro
N
Matsushita
Department of Obstetrics and Gynecology, Nippon Medical School Tama Nagayama Hospital, 1-7-1 Nagayama, Tama, Tokyo, 206-8512, Japan.
Atsuko
A
Sekiguchi
Department of Obstetrics and Gynecology, Nippon Medical School Tama Nagayama Hospital, 1-7-1 Nagayama, Tama, Tokyo, 206-8512, Japan.
Akihito
A
Nakai
Department of Obstetrics and Gynecology, Nippon Medical School, 1-1-5 Sendagi, Bunkyo, Tokyo, 113-8602, Japan.
Toshiyuki
T
Takeshita
Dacryocystocele; Fetal ultrasound; Lacrimal duct cyst; Prenatal diagnosis