Korean J Obstet Gynecol.  2005 May;48(5):1358-1361.

A Case of Prenatally Diagnosed Jacobsen syndrome

• Yoon JH
• Kim SR
• Lee WI
• Do IG
• Lee BY
• Lee SK
• Huh CY
• Kim SB

Abstract

Jacobsen syndrome is a rare condition associated with the deletion of the long arm of chromosome 11. Though several authors reported prenatal sonographic findings of the Jacobsen syndrome, there are no common disease-specific features. The majority of affected cases were identified postnatally by chromosomal analysis of the dysmorphic or mentally retarded patients. We present a prenatal case of Jacobsen syndrome with a brief review of literature. A routine scanning in a 32-year-old primigravida at 17.3 weeks' gestation showed abnormal ultrasonographic findings consistent with increased nuchal thickening and subtle cardiac abnormalities (levorotated heart axis of greater than 60 degrees and thickened ventricular wall). The patient underwent amniocentesis, and the karyotype showed deletion of the long arm of chromosome 11, 46,XX, del (11) (q23.1q24). The fetal autopsy performed following medical termination confirmed the prenatal findings. The present case represents that the prenatal sonographic detection of the nuchal thickening and subtle cardiac abnormality should warrant a careful assessment of fetal anatomy and prompt cytogenetic analysis looking for chromosomal aberrations.

Keyword

Jacobsen syndrome; Chromosome 11q deletion; Prenatal diagnosis; Ultrasound

MeSH Terms

Adult
Amniocentesis
Arm
Autopsy
Axis, Cervical Vertebra
Chromosome Aberrations
Chromosomes, Human, Pair 11
Cytogenetic Analysis
Heart
Humans
Jacobsen Distal 11q Deletion Syndrome*
Karyotype
Mentally Disabled Persons
Pregnancy
Prenatal Diagnosis
Ultrasonography