Femoral hernias (alternative plural: herniae) are a type of groin herniation and comprise a protrusion of a peritoneal sac through the femoral ring into the ...×ArticlesLogInCasesSignUpCoursesQuizDonateAbout×MenuSearchADVERTISEMENT:Radiopaediaisfreethankstooursupportersandadvertisers.BecomeaGoldSupporterandseenoads.ArticlesCasesCoursesLogInLoginSignup{"url":"/signup-modal-props.json?lang=us\u0026email="}ArticlesCasesCoursesQuizAboutRecentEditsGoad-freeSearchFemoralherniaDrVikasShah◉andDrYurangaWeerakkody◉etal.Femoralhernias(alternativeplural:herniae) areatypeofgroinherniationandcompriseaprotrusionofaperitonealsacthroughthefemoralringintothefemoralcanal,posteriorandinferiortotheinguinalligament.Thesacmaycontainpreperitonealfat,omentum,smallbowel,orotherstructures.Onthispage:Article:EpidemiologyPathologyRadiographicfeaturesDifferentialdiagnosisSeealsoRelatedarticlesReferencesImages:CasesandfiguresEpidemiologyTheremaybeanincreasedright-sidedpredilection2,3.Thereisanincreasedprevalenceinfemales6.PathologyMostfemoralherniasprotrudeinferiortothecourseoftheinferiorepigastricvesselsandmedialtothecommonfemoralvein.Theyoftenhaveanarrowfunnel-shapedneckandmaycompressthefemoralvein,causingengorgementofdistalcollateralveins.Occasionally, afemoralherniamaydevelopdifferentlyorbelocatedsomewherebesidesmediallytothefemoralvessels.Possibilitiesincludeaherniadevelopingthroughthelacunarligament(Laugier'shernia),orthroughthepectinealfascia(Cloquet'shernia)7.  Femoralherniasinanatypicalrelationtothefemoralvesselsincludethoselateral(Hesselbach'shernia),prevascular(Velpeau'shernia)orretrovascular(Serafini'shernia)7. RadiographicfeaturesUltrasoundScanningbelowtheinguinalligament,assessingthespacemedialtothefemoralveinforahernia.TheValsalvamaneuvercanbeperformedtoprovokeherniation;thecommonfemoralveinshouldalsodilate6. CTFemoralherniastypicallyhaveacharacteristicfunnel-shapedneck.OnaxialCTimages,theneckofthefemoralherniasacmaybeseenasanarrowprotrusionthroughthefemoralringjustmedialtothecommo