Abstract
Article: Three-Dimensional Sonography, Tomographic Sonography Imaging, and the OmniView Algorithm: New Imaging Modality in the Prenatal Diagnosis of Congenital Dacryocystocele
Authors: Gabriele Tonni, MD, PhD
Lucia Rosignoli, MD, PhD
Giovanni Centini, MD
Mario Lituania, MD
Chiara Doneda, MD
Category: Obstetrics/Gynecology (OB)
Credit: 1.0 SDMS CME credit
Objectives: After studying the article titled “Three-Dimensional Sonography, Tomographic Sonography Imaging, and the OmniView Algorithm: New Imaging Modality in the Prenatal Diagnosis of Congenital Dacryocystocele,” you will be able to:
Evaluate the best time prenatally to use sonography to examine for congenital dacryocystocele
Describe the pathophysiology of congenital dacryocystocele
Discuss the imaging characteristics necessary for the diagnosis of congenital dacryocystocele
Canalization of the nasolacrimal pathway begins at approximately how many weeks of gestation? 8 weeks 12 weeks 16 weeks 20 weeks
Congenital cystic obstruction of the nasolacrimal duct can be diagnosed prenatally at what time point? First trimester Second trimester Third trimester At any time prenatally
Differential diagnosis of dacryocystocele includes Rhabdomyosarcoma Hemangioma Nasal glioma All of the above
Imaging components for diagnosing the dacryocystocele include all of the following except: Enlargement of the lacrimal sac Constriction of the lacrimal duct Intranasal cyst Imaging in the axial or frontal planes
Congenital dacryocystoceles account for what percentage of congenital nasolacrimal duct obstruction? 0.1% 0.5% 1% 2%
Dacryocystocele is most often Secondary to sinonasal cancer Secondary to ablative surgery Secondary to radiation therapy A benign primary lesion
A factor in the occurrence of dacryocystocele is Distal obstruction of the nasolacrimal system Proximal opening of the nasolacrimal system The mesoderm canalizes distally Opening of the valve of Hasner
8. How often does dacryocystocele occur bilaterally? Rarely Approximately 10% of the time Approximately half of the time Almost always
What is the mean size of the cystic lesion as reported in the literature? 5 mm 7.5 mm 10 mm 15 mm
What is the reported approximate resolution rate of dacryocystocele after conservative medical management? 40% 60% 75% 85%