distended jugular lymphatic sacs in the first trimester of pregnancy · 2019. 6. 13. · distended...

DistendedjugularlymphaticsacsinthefirsttrimesterofpregnancySancho-SaucoJ,Pelayo-DelgadoI,Abarca-MartínezL,Cabezas-LópezE,Lazaro-CarrascodelaFuenteJ,Villalón-VillarroelC

RamónyCajalHospital,Madrid,Spain

ObjectiveTodescribetheprevalenceofdistendedjugularlymphaticsacsinafirsttrimesterscreeningultrasound,andtoevaluatetheinfluenceandprognosticrelevanceoffetallateralneckcystsonthescreeningperformanceforchromosomalabnormalitiesandtheimportanceoftheassociatedfindings.

MethodsIt´s a retrospective study in a tertiary referral center in Madrid (Spain) over a period of 2 years (January 2017-December 2018). First trimesterscreeningultrasoundwasperformedinastudypopulationof4845patients. In fetuswithdistendedjugular lymphaticsacs,additionalplanes intheneckregionwereperformedusingbothtransvaginalandtransabdominalultrasonography.Thesacsweremeasuredanterior-posterior.Karyotypingwasperformedbychorionic-villi-samplingoramniocentesis.

ResultsDistendedjugularlymphaticsacscouldbevisualizedin19fetus.Theincidencewas0,39%(19/4845).Themeanageofpregnantswas36,74(range31-42).Theleftandrightjugularlymphaticsacweremeasuredinallfetus.Themajorityofcaseswerebilateral.Relativelygreaternuchaltranslucency(NT)thicknesswasassociatedwithahigherprobabilityofthepresenceofdistendedjugularlymphaticsacs(11fetuswithNT>p99%,3fetuswithNTp95-99%and5 fetuswithnormalNT).13 fetus (68,42%)presentedassociated findingsormalformations.7 fetushadchromosomalalterations (6fetuswereDownsyndromeand1fetuswasEdwardssíndrome).Another12fetushadanormalkaryotype(therewere2spontaneusabortionsat14weeksand15weeks).

ConclusionThe ultrasound visualization of distended jugular lymphatic sacs have a correlation with chromosomal abnormalities and increased nuchaltranslucency.Karyotypingshouldbeofferedinthesecases.

18 WorldCongressinFetalMedicineth