Early Prenatal Diagnosis of Blakes' Pouch Cyst by 2D/3D Ultrasound with Cristal and Realistic Vue Application

Fetal and Pediatric Pathology
Gabriele TonniRodrigo Ruano

Abstract

Blake's pouch cyst (BPC) represents an abnormal development of the posterior membranous area of the fetal brain. Two- and three-dimensional ultrasound with Cristal and Realistic Vue were used to characterized the early prenatal diagnosis. At 9 weeks and 5 days a ballooning in the posterior fossa and resulting in an enlarged intracranial translucency (IT) was detected by 3D ultrasound using Cristal Vue in "inversion" mode and Cristal plus Realistic Vue. In addition, an increased nuchal translucency (7 mm) due to septated cystic hygroma (SCHy) was an associated finding. Hydrops fetalis ensued and a chorionic villus sampling at 12 weeks revealed a 45,X monosomy with persisting BPC. Follow up scan were planned fortnightly. A spontaneous miscarriage occurred at 16 weeks. Three-dimensional ultrasound with Cristal and Realistic Vue aided the prenatal diagnosis of BPC in the first trimester.

References

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