Fetal and Neonatal Abnormalities Due to Congenital Rubella Syndrome: a Review of Literature

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Fetal and Neonatal Abnormalities Due to Congenital Rubella Syndrome: a Review of Literature http://informahealthcare.com/jmf ISSN: 1476-7058 (print), 1476-4954 (electronic) J Matern Fetal Neonatal Med, 2017; 30(3): 274–278 ! 2016 Informa UK Limited, trading as Taylor & Francis Group. DOI: 10.3109/14767058.2016.1169526 REVIEW ARTICLE Fetal and neonatal abnormalities due to congenital rubella syndrome: a review of literature Alexandre Yazigi1, Aurelia Eldin De Pecoulas1, Christelle Vauloup-Fellous2, Liliane Grangeot-Keros2, Jean-Marc Ayoubi1,3, and Olivier Picone1,3 1Department of Obstetrics and Gynecology, Hoˆpital Foch, Suresnes, France, 2AP-HP, Hoˆpital Paul Brousse, Groupe Hospitalier Universitaire Paris-Sud, Virologie, WHO Rubella NRL, National Reference Laboratory for Maternofetal Rubella Infections, Univ Paris-Sud, INSERM U1193, Villejuif, France, and 3EA2493; UFR Des Sciences De La Sante´ Simone Veil, Universite´ Versailles Saint Quentin En Yvelines, Montigny Le Bretonneux, France Abstract Keywords Objective: Rubella virus infection during the first trimester of pregnancy can cause congenital Antenatal ultrasound, congenital cataract, rubella syndrome (CRS). We aimed to describe the abnormalities in order to define the congenital heart diseases, congenital ultrasound features to look for when performing prenatal scans. The goal of this review is to rubella syndrome, fetal infection, rubella focus specifically on the signs of CRS accessible to prenatal diagnosis. and pregnancy Methods: We analyzed every case of CRS described before and/or after birth that we identified in the Pubmed database and classified them as accessible or not to prenatal diagnosis. History Results: The most frequently reported malformations accessible to prenatal diagnosis were: cardiac septal defects, pulmonary artery stenosis, microcephaly, cataract, microphtalmia, and Received 13 February 2016 hepatosplenomegaly. Revised 17 March 2016 Conclusion: This extensive literature review shows that the ultrasound features of CRS are not Accepted 20 March 2016 well known, even though rubella was the first teratogenic virus described. This review will help Published online 21 April 2016 clinicians in the management of rubella during pregnancy by clarifying the findings to be sought. Introduction description of the signs of CRS accessible to prenatal diagnosis. Rubella is an eruptive, highly contagious, and generally mild viral disease that is unnoticed and without consequences in most cases. Primary infection usually occurs during childhood Materials and methods and provides long-term immunity. Infection during the first We conducted a literature review with the Pubmed database. trimester of pregnancy can cause a fetal malformation We searched for data concerning the prenatal period in syndrome known as congenital rubella syndrome (CRS) antenatal or virological or pediatric literature, using the [1–3]. following keywords: ‘‘congenital rubella syndrome; rubella This infection can be prevented effectively by vaccine [2]. The decline in the number of cases of CRS in developed and pregnancy; fetal infection; congenital heart disease; and congenital cataract’’. We have analyzed every case report and countries may lead to its under-diagnosis [2]. Because series in which there was a description of at least one case of countries with widespread antenatal ultrasound screening CRS. The search covered the time period from the first cases also generally have universal vaccination programs including described in 1941 to 2014, and after 1991 for the prenatal rubella, this viral infection is more frequent in countries descriptions. We also analyzed every case reported to the without such screening. Accordingly, the antenatal ultrasound French national reference center for rubella between 2011 features of CRS are little known. and 2014. Objective We first present the results of the cases described antenatally and then the postnatal cases. We classified the The diagnosis, management and outcome of rubella during postnatal abnormalities described according to their accessi- pregnancy have been extensively reviewed elsewhere [2]. bility to antenatal diagnosis. As there is a risk of bias, we The goal of this review is to focus specifically on the chose to present mainly absolute numbers, and to not calculate percentages, sensitivity or specificity or prenatal imaging. Finally, we discuss the most frequent ultrasound Address for correspondence: Olivier Picone, Service de Gyne´cologie Obste´trique, Hoˆpital Foch, 40 Rue Worth, 92151 Suresnes, France. Tel: 0 patterns encountered and thus to be looked for in cases with 826 20 72 20. Fax: 01 46 25 25 51. E-mail: [email protected] potential CRS. DOI: 10.3109/14767058.2016.1169526 Fetal and neonatal abnormalities due to CRS 275 Results [15,20,23], six (4,7%) [3,10,12,26,33] were cerebral calcifi- cations, two anencephalies [20] and one case of cerebellar Antenatal descriptions vermis agenesis [4], corpus callosum hypoplasia [4], and Between 1991 and 2014, 32 cases of CRS were diagnosed hydranencephaly [31]. All may be accessible to prenatal prenatally [4–11]. Every case was diagnosed during the first diagnosis. trimester after a maternal infection between 4 and 12 weeks of Genitourinary disorders: There were 40/1970 genitourin- gestation. Seventeen of these 32 fetuses presented 56 different ary disorders. Abnormalities accessible to prenatal diagnosis abnormalities detected before birth. Amniotic fluid anomalies were: three vesicoureteral reflux [23,28], two renal agenesia in thirteen cases including: polyhydramnios in four cases, [20], and one case of hydronephrosis [23] and hypospadias oligohydramnios in eight [4,6–8,11], and ‘‘foggy’’ amniotic [4]. Were not accessible to prenatal diagnosis: 18/40 (45%) fluid (which appeared to be meconium-stained, as meconium ectopic testicles [12,23,9] (22,5%) inguinal hernias [23], 3 peritonitis was also observed) [9], IUGR (11/32 cases, 34%). (7.5%) hydrocele [23]. Heart malformations (11/32, 34.3%) included ventricular Other abnormalities: 372 cases presented various abnorm- septal defects (three cases) [11], atrial septal defects (two alities possibly accessible to prenatal diagnosis: 174 low birth cases) [8,11], and aortic stenosis (one case) [11], total weight [3–7,9,12–14,22,23,25,26,30–34,36,37,39], 55 cases anomalous pulmonary venous return (one case) [4], axis of hepatosplenomegaly [7,9,12–14,16,18,22,25,31–33,36], 46 deviation of the heart (one case) [4], tricuspid regurgitation cases of purpura [13,14,16,18,22,24,25], 45 cases of thrombo- (one case) [4], mitral valve abnormality (one case) (hyper- cytopenia [13,22,25], 10 long-bone anomalies [22], six echogenic focus) [5], and cardiomegaly (one case) [8]. Seven micrognathia [22], four cases of syndactyly [18,22], and one of 56 anomalies concerned the brain (12.5%): two with each of umbilical vein dilation [32], duodenal stenosis [38], Dandy–Walker Syndrome [7,11], and one each with cerebel- meconium peritonitis [9], cleft palate [18], and diaphragmatic lar vermis agenesis [4], hydrocephalus [11], ventriculomegaly hernia [20]. Hearing loss was reported in 375 children (19%) [10], anencephaly [11], and periventricular calcifications [10]. [3,6,7,12,13,18,20,23–27,31,28,29,39] and low birth weight There were two ocular abnormalities, each described in a in 174 (9%) [3–7,9,12–14,22,23,25,26,30–34,36,37,39]. single case (3% of all 32 fetuses): cataract [5] and During the period between 2011 and 2014, seven cases of microphthalmia [5]. There were 14 other ultrasound anoma- CRS were reported to the French National Reference Center lies, including placentomegaly (5) [4,8], hepatosplenomegaly For Rubella (Hoˆpital Paul Brousse, Villejuif, France). Their (2) [8,11], and one each of the following: a single umbilical antenatal anomalies included two cases of IUGR and one case artery 4, micrognathia 4, a short femur 4, ascites 8, a of cataract, microphthalmia, a hyperechogenic point on the hyperechogenic bowel 8, and a hyperechogenic scrotal mitral valve, and a single umbilical artery. The postnatal mass 9. abnormalities were four low birth weights, three neurological disorders (one psychomotor retardation, two undefined), two Postnatal description microcephalies, two hearing losses, two cataracts, one aortic We analyzed all postnatal signs reported in the literature in coarctation, and one microphthalmia. Table 1 summarizes the order to define the ultrasound features to look for when reported morphological abnormalities in all 1148 prenatal and performing prenatal scans. There were 1970 abnormalities postnatal cases described in the literature accessible to reported in 1109 children with CRS. prenatal diagnosis. Ophthalmological abnormalities: There were 633 ophthal- mological disorders described. Ultrasound abnormalities Discussion accessible to prenatal diagnosis are: cataracts 234/633 Our investigations show the most frequent features that should (37%) [4,6,7,12–27], microphthalmia 41 (6.5%) [4,6,12–14, be sought on ultrasound examination of fetuses with sus- 17,18,21,23,28]. Retinopathy 25 (4%) [26,29], chorioretinitis pected CRS. We reviewed the data of 1141 cases of CRS 178 (28%) [7,13,14,18,21,23,24,30,31], and glaucoma 25 published thus far, plus seven more cases that we describe (4%) [6,13,14,23,24] are not accessible to prenatal diagnosis. here for the first time. We note that cases of antenatal CRS are Cardiac abnormalities: 427 cardiac abnormalities were rarely reported: only 32 cases. Most of the cases have been described. Only 290 were clearly specified in the articles. described in pediatric, virological,
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