University of Groningen
Axillobifemoral bypass for total abdominal occlusion secondary to Takayasu's arteritis
Jiménez-Zarazúa, Omar; Vélez-Ramírez, Lourdes Noemí; Martínez-Rivera, María Andrea;
Hernández-Ramírez, Abraham; Palomares-Anda, Pascual; Alcocer-León, María;
Becerra-Baeza, Angélica Monserrat; Mondragón, Jaime D
Published in:
International journal of surgery case reports
DOI:
10.1016/j.ijscr.2019.07.031
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Jiménez-Zarazúa, O., Vélez-Ramírez, L. N., Martínez-Rivera, M. A., Hernández-Ramírez, A.,
Palomares-Anda, P., Alcocer-León, M., Becerra-Baeza, A. M., & Mondragón, J. D. (2019). Axillobifemoral bypass for
total abdominal occlusion secondary to Takayasu's arteritis: A case report. International journal of surgery
case reports, 61, 147-152. https://doi.org/10.1016/j.ijscr.2019.07.031
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Contents lists available atScienceDirect
International
Journal
of
Surgery
Case
Reports
j o u r n a l h o m e p a g e :w w w . c a s e r e p o r t s . c o m
Axillobifemoral
bypass
for
total
abdominal
occlusion
secondary
to
Takayasu’s
arteritis:
A
case
report
Omar
Jiménez-Zarazúa
a,b,
Lourdes
Noemí
Vélez-Ramírez
b,c,
María
Andrea
Martínez-Rivera
a,b,
Abraham
Hernández-Ramírez
c,
Pascual
Palomares-Anda
d,
María
Alcocer-León
b,e,
Angélica
Monserrat
Becerra-Baeza
b,
Jaime
D.
Mondragón
f,g,∗aHospitalGeneralLeón,DepartmentofInternalMedicine,Mexico bUniversidaddeGuanajuato,DepartmentofMedicineandNutrition,Mexico cHospitalGeneralLeón,DepartmentofRadiology,Mexico
dHospitalGeneralLeón,DepartmentofHematology,Mexico
eHospitalRegionalISSSTELeón,DepartmentofInternalMedicine,Mexico
fUniversityofGroningen,UniversityMedicalCenterGroningen,DepartmentofNeurology,theNetherlands gUniversityofGroningen,UniversityMedicalCenterGroningen,AlzheimerResearchCenter,theNetherlands
a
r
t
i
c
l
e
i
n
f
o
Articlehistory: Received23May2019
Receivedinrevisedform11July2019 Accepted12July2019
Availableonline19July2019
Keywords:
Axillobifemoralbypass Casereport
Takayasu’sarteritis Totalabdominalocclusion
a
b
s
t
r
a
c
t
INTRODUCTION:Takayasu’sarteritis(TA)isararediseasethatmainlyaffectslargearteries. Approxi-mately20%ofTApatientswillrequiresurgicalinterventionsecondarytoarterialcomplicationssuchas intermittentclaudication,persistenthypertensionrefractorytotreatment,andheartfailure.
PRESENTATIONOFCASE:Thecaseofa22-year-oldfemalewithTAoffiveyearsofevolutionispresented. Thepatientdeterioratedclinicallyafterfiveyearsofcorticosteroidandimmunosuppressantmanagement requiringsurgicalinterventionwithanaxillobifemoralbypassforatotalabdominalocclusion.Onset, pre-surgicalandpost-surgicalDopplerultrasonographyaswellasabdominalangiotomographiesdocument andcorroboratethepatient’sclinicalandhemodynamicimprovement.
DISCUSSION:VerylimitedliteratureexistsregardingsurgicalinterventionsforTApatients.Whilemost reportedcasespresentanendovascularsurgicalmanagement.Opensurgicalprocedureshavelowerrates ofrestenosisthanendovascularmanagement.Althoughendovascularmanagementislessinvasivethan extra-anatomicalaxillobifemoralbypass,thepatientwasnotacandidateforendovascularstentgraft placementduetotheincreasedriskforvascularinjuryandsubsequentperforation.Approximatelya fifthofTApatientsarecandidatesforsurgicalinterventionovertime.
CONCLUSION:VascularsurgeryinTAcasesbecomesanoptionwhenthepatientdoesnotimprove clinicallyafteradministrationofmedicaltreatment.Althoughendovascular managementhasfewer complications,therateofrestenosisishigher.Patientsatriskofrestenosisandwhohaveincreased perioperativevascularriskcanbenefitfromopensurgicalprocedures.Surgicalmanagementshouldbe tailoredtothepatient’sneeds.
©2019PublishedbyElsevierLtdonbehalfofIJSPublishingGroupLtd.Thisisanopenaccessarticle undertheCCBYlicense(http://creativecommons.org/licenses/by/4.0/).
1. Introduction
Takayasu’sarteritis (TA)is a chronic,inflammatory, granulo-matous,idiopathicdiseasethataffectsarteriessuchastheaorta anditsramifications,aswellasthepulmonaryartery[1,2]. Arte-rialvasculitisinTAischaracterizedbybothdilationandstenosis. Histopathological findings include a panarteritis which shows inflammationaroundthevasorumvesselaswellasthe
adventi-∗ Correspondingauthorat:UniversityMedicalCenterGroningen,Departmentof Neurology,POBox30001,9700RBGroningen,theNetherlands.
E-mailaddress:j.d.mondragon.uribe@umcg.nl(J.D.Mondragón).
tia,withaperivascularmononuclearinfiltrate,composedmainlyof CD4+/CD8+lymphocytes,plasmacells,andmacrophages[1].TAis ararediseaseanditismoreprevalentinCentralandSouth Amer-ica,Africa,India,andtheFarEast[3].TAhasaprevalenceinthe Japanesepopulationof0.004%andayearlyincidenceofbetween 0.7–4.7casespermillion[3–6].
TheclinicalpresentationassociatedwithTAisunspecific. Symp-tomscanrangefromconstitutionalsymptoms(e.g.fatigue,fever, andweightloss)toclaudication,cephalalgia,syncope,angina pec-toris,andabdominalpainwhichareassociatedtovascularterritory affectedbythearteritis[6,7].Althoughthereisnoimagingor lab-oratorygoldstandardswithadequatesensitivityofspecificityfor TA,theAmericanCollegeofRheumatologyandIshikawadiagnostic https://doi.org/10.1016/j.ijscr.2019.07.031
2210-2612/©2019PublishedbyElsevierLtdonbehalfofIJSPublishingGroupLtd.ThisisanopenaccessarticleundertheCCBYlicense(http://creativecommons.org/licenses/ by/4.0/).
148 O.Jiménez-Zarazúaetal./InternationalJournalofSurgeryCaseReports61(2019)147–152 criteriaarethemostwidelyadoptedcriteria[7–9].Thesecriteria
incorporateageat diseaseonset, muscular and arterial tender-ness,claudication,pulsecharacteristics,bloodpressuredifferences, findingsrelatedtoarterialauscultation,arteriogramfindings,and echocardiographicalterations[8,9].While20%ofTApatientshave aself-limiteddiseaseprogression,upto20%willrequiresurgical interventionsecondarytoarterialcomplications[7].Intermittent claudication,persistenthypertensionrefractorytotreatment,and heartfailureareamongthemostcommonindicationsforsurgical interventioninTA[10].
WepresentthecasereportinlinewiththeSCAREcriteria[11] ofa patientwithTA treatedin a universityhospital,who after fiveyearsofcorticosteroidandimmunosuppressantmanagement deterioratedclinicallyrequiringsurgicalinterventionwithan axil-lobifemoralbypassforatotalabdominalocclusion.Verylimited literatureexistsregardingsurgicalinterventionsforTApatients. Thiscasecontributes totheexistingliteraturewithasuccessful surgicalcasethatdocumentedthroughvariousimagingmodalities apatientforoverfiveyears.
2. Casepresentation
A 22-year-oldfemale arrived at theEmergency Department presentingclaudicationwhenwalkinglessthan300maswellas increasedparesthesiaand dysesthesia inboth pelviclimbs.The claudication,paresthesia,anddysesthesiabeganfiveyearsearlier. Atthetime of onset, theclaudicationwas bilateralafter walk-ing approximately 1500m with improvement after rest, while theparesthesia and dysesthesia werebilateraland involved all fourextremities. At that time, the patient wasdiagnosed with Takayasu’sarteritis(TA) bytheRheumatologydepartmentfrom this institution based on immunological profile (i.e. rheuma-toidfactor,antinuclearantibodies,anticardiolipinantibodies,and antineutrophilcytoplasmicantibodies(ANCA),theAmerican Col-legeofRheumatologyandIshikawacriteria.[8,9]Sixmonthsprior tothepatient’svisittothishospital,claudicationprogressed(i.e. reductioninthedistanceabletowalkto500m,increasing pares-thesia and dysesthesia frequency).The patienthad no relevant familyandpersonalnon-pathologicalhistorytohercurrent condi-tion.Thepatientdeniedtheuseofcontrolledsubstances,allergies, pastbloodtransfusions,travelingtoregionswithendemicdiseases withinthelastthreemonths,tattoosandbodypiercings.
Uponinitialphysicalexamination,wefoundapatient recum-bentwithfreelychosenbodyposition,Glasgowcomascoreof15, withoutfocal neurologicdeficitsnormeningeal sings,aware of hisenvironment, withreferencetoplace,time,andpeople.The patient’sintegumentarysystemwashydratedandwithout alter-ations,whiletheheadandneckexplorationhad noalterations. Uponinspection,palpation,andpercussionthecardio-respiratory systemandabdomenhadnoabnormalfindings.Precordial aus-cultation revealed tachycardia, but no aggregate phenomena. AbdominalauscultationrevealedasystolicmurmurgradeIII/IVat themesogastrium.Rightupperlimbexplorationrevealednormal axillar,humeral,andradialpulses(i.e.presenceofrhythmic,with normalintensity+++/+++, normalamplitude, andhavinga syn-chronousfrequencywithheartrate).Therightulnararterypulse wasabsent.Uponleftupperlimbexploration,palpationshowed thepresenceofnormalaxillarandhumeralpulses;whileradialand ulnarpulseswereabsent.Lowerlimbexplorationshowedabsence ofbilateralfemoral,poplitealandposteriortibialpulses.Theskin presentedcyanoticappearance,especiallyofthetoesofbothfeet. Uponpalpation,reducedskintemperaturewasnoticedandabsence ofedema.Uponadmission,thepatienthadthefollowingvitalsigns: bloodpressure100/70mmHgintherightarm,80/60mmHginthe leftarm,bloodpressureintherightlegandtheleftlegwerenot
detectable;heartrate85bpm;respiratoryrate17rpm; tempera-ture36◦C;weight65kg;height167cm;bodymassindex23.3kg/m [2].LaboratoryresultsatadmissionarepresentedinTable1andthe follow-uplaboratoryresultsinTable2.
Table1
LaboratorytestresultsuponadmissiontheEmergencyDepartment.
FullBloodCount
Hemoglobinatadmission 14.5g/dL
Hematocrit 44.5%
Erythrocytecount 5300L
Plateletcount 296,000L
Meancorpuscularvolume 85fL
Meancorpuscularhemoglobinconcentration 27.30g/dL
Leukocytecount 9200L Lymphocytes 18.8% Neutrophils 69.9% Monocytes 9.1% Eosinophils 2.1% Basophils 0.1% BloodChemistry Glucose 88mg/dL Albumin 2.42gr/dL Ureanitrogen 0.60mg/dL
Bloodureanitrogen 12.9mg/dL
Uricacid 3.6mg/dL
Cholesterol 130mg/dL
Triglycerides 140mg/dL
LiverFunctionEnzymes
Aspartatetransaminase 9U/L
Alaninetransaminase 12U/L
Lactatedehydrogenase 10U/L
Albumin 3.5mg/dL
Alkalinephosphatase 66.8U/L
Gamma-glutamyltranspeptidase 10U/L BloodCoagulation
Prothrombinetime 18Sec
Partialthromboplastintime 40Sec Internationalnormalizedratio 1.36 Electrolytes Sodium mEq/dL Potassium mE/dL Chlorine mEq/dL Calcium mg/dL Phosphorus mg/dL Magnesium mEq/dL Table2
Complementarylaboratorytestresults. Follow-up
Immunologicalassay
Anti-double-strandeddeoxyribonucleicacid 0.9UI/mL Anti-cardiolipinIgG 1.0UI/mL Anti-cardiolipinIgMantibody 3.0UI/mL Erythrocytesedimentationrate 15mm/h
C-reactiveprotein 3.80mg/dL
Viralassay
HepatitisBvirus Negative
HepatitisCvirus Negative
Humanimmunodeficiencyvirus Negative Urinalysis
Appearance Crystalline
pH 6.5
Specificgravity 1.020
Proteins 30mg/dL
Ketones,glucose,andnitrite Negative
Leukocytes 2perhighpowerfield
Erythrocytes 3perhighpowerfield
Fig.1.Abdominalangiotomographyshowingaorticandmultiplevesselstenosesatthetimeofdiagnosis.A)Coronalreconstructionshowingemergenceofaorticartery 27mmfromtherenalarterieswithstenosissuperiorto50%.Thelengthofthestenosisofapproximately64mm(markedbyarrow).B)Coronal3-Dreconstruction.Multiple collateralarteriesarepresentwithaprominentanddilatedarcofRiolanwithvascularredistributiontotheiliacarteries.Stenosismarkedbyarrow.
3. Clinicalhistory
Duringinitialsymptomonset(i.e.fiveyearspriortothis hospi-taladmission)thepatienthadabsentleftupperlimbdistalpulses (i.e.radialandulnarpulse).Therightupperlimbpulses(i.e. axil-lar,humeral,ulnar,andradial)andleftaxillarandhumeralpulses hadwerepresent,rhythmic,withnormalintensity(i.e.+++/+++), andhavingasynchronousfrequencywithheartrate.Lowerlimb explorationshowednormalleftlimbpulses(i.e.femoral,popliteal, posterior tibial and dorsal pedis) and decreased right femoral (i.e.present, decreased frequency and amplitude,and intensity ++/+++),rightpopliteal(i.e.present,rhythmic,intensity+/+++,and decreasedamplitude)pulsesandabsentrightlimbdistalpulses(i.e. posteriortibialanddorsalispedis).
During theinitialonset, thepatientunderwent pulsed-wave Doppler ultrasonography(i.e. spectral) of the lower limbs.The reported arterial blood flow velocities of the common femoral artery, right superficial femoral artery, left superficial femoral artery,rightpoplitealartery,andleftpoplitealarterywere dimin-ishedandarefoundinTable3.Thewaveformwasmonophasicwith adampenedpatterncompatiblewithabilateralfemoropopliteal insufficiency.Dopplerultrasonographyoftheabdominalaortahad a50%diameterreductionbelowtherenalarterieslevel.An abdom-inalangiotomographyreportedaorticandmultiplevesselstenoses (Fig.1a).
Initialtreatmentwasprednisone50mgorally(peros,PO)every (quaque,q)24h, methotrexate20mgPO q7days,and folicacid 10mgPOq7d.Aftersixmonthsandclinicalimprovementthe pred-nisonedosewasadjusted(i.e.prednisone7.5mgPOq24h)fortwo years.Afterwithstandingaboutofpurpuricpigmented dermato-sisthedoseofprednisonewasadjustedto15mgPOq7dandtopic clioquinolandclindamycinfortwoweekswasadministered.
4. Clinicalevolutionandsurgicalmanagement
Transesophageal echocardiography (TEE) was performed to assesspresenceaorticrootabnormalities.TheTEEreportedaleft
Table3
Bloodflowvelocitiesattimeofdiagnosis.
Anatomicalregion Velocity(cm/sec)
Upperlimbs Right Left
Axillaryartery 77 87
Proximalsegmentbrachialartery 76 82 Middlesegmentbrachialartery 70 75 Distalsegmentbrachialartery 62 51 Proximalsegmentradialartery 45 37
Distalsegmentradialartery 31 35
Proximalsegmentulnarartery 43 33
Distalsegmentulnarartery 42 33
Abdominalaorta
Suprarenalsegment 160
Infrarrenalproximalsegment 253 Infrarrenaldistalsegment 288
Externaliliacartery 230 153
Lowerlimbs Right Left
Commonfemoralartery 36 25
Proximalsegmentsuperficialfemoralartery 21 16 Middlesegmentsuperficialfemoralartery 17 15 Distalsegmentsuperficialfemoralartery 13 11
Poplitealartery 12 11
Proximalsegmentanteriortibialartery 12 19 Middlesegmentanteriortibialartery 12 6 Distalsegmentanteriortibialartery 7 7 Proximalsegmentposteriortibialartery 10 10 Middlesegmentposteriortibialartery 8 6 Distalsegmentposteriortibialartery 10 8 Proximalsegmentfibularartery 7 13
Middlesegmentfibularartery 6 7
Distalsegmentfibularartery 6 6
ventricularejectionfractionof66%,withoutthepresenceof intra-cavitarythrombi.Supra-aorticDopplerultrasonographyrevealeda tardus-parvuswaveformattherightvertebralarterysuggestiveof stenosisattherightsubclavianartery.Therightcommoncarotid arteryshowedahyperechoicimage(i.e.22mmx3mm) compati-blewithanatheroma,withoutreductionofbloodflowvelocity(i.e. 20cm/secand30%stenosis).Anabdominalangiotomographywas performed,reportingirregularwallthickeningoftheabdominal aortawitha5.8cmextension(i.e.originatingbelowtheemergence
150 O.Jiménez-Zarazúaetal./InternationalJournalofSurgeryCaseReports61(2019)147–152
Fig.2. Post-surgicalabdominalangiotomographyshowingapermeableaxillobifemoralprostheticgraft.AandB)3-Dreconstructioncomputedtomography.
ofthesuperiormesentericarteryandextendingtothebifurcation oftheiliacarteries)andbothiliacarteriespresentedatotal occlu-sionofapproximately4.3cm(Fig.1aandb).However,thearcof Riolanwaspermeableinitsentirety(Fig.1b).
Extra-anatomicalrevascularization was performed, withthe placement of an 8mm axillobifemoral poly-tetrafluoroethylene (PTFE)-basedprostheticgraft.Steriletechniquewasprocuredat alltimes.Thevascularaccessfortheprostheticgraftplacement wastheleftinfra-clavicularregion,witharightfemoral end-to-end anastomosis.The graftwas tunneled subcutaneouslyalong themidaxillarylinetopreventgraftentanglementdue totorso flexion.Upperandlowerlimbpulseswerepresentafterarterial unclamping.Minimal hemorrhage (i.e. less than 400cc)and no complicationswerereportedduringandaftersurgery. Seventy-twohoursaftertheprocedurethepatientwasdischargedfromthe hospitalwithclinicalimprovement.
Twoweeksafterthesurgicalprocedurethepatientwas clini-callyevaluated.Thepatientreportedsymptomimprovement(i.e. paresthesia,dysesthesia,andclaudication).Uponphysical exami-nation,bothinferiorlimbshadfemoral,popliteal,posteriortibial, anddorsalpedispulsespresent,symmetric,rhythmic,withlow amplitude,intensity++/+++,andinsynchronywiththeheartrate. Theskinshowednodistalcyanosis,temperaturechangesoredema. Thepatientunderwentpulsed-waveDopplerultrasonographyof thelowerlimbswithadequatebloodflow.Apost-surgical abdom-inalangiotomographywasperformedwhichshowedapermeable axillobifemoralprostheticgraft(Fig.2).Thepostoperativeblood flowvelocitiesarereportedinTable4.Thepatientwasmanaged withprednisone10mgPOq24handrivaroxaban20mgPOq24h, withoutreportingadverseeffects(i.e.3monthspost-surgery).
5. Discussion
We present thecase report of a patientwithTA, who after fiveyearsofcorticosteroidandimmunosuppressantmanagement deterioratedclinicallyrequiringsurgicalinterventionwithan
axil-Table4
Post-operativebloodflowvelocitiesofmajorlowerextremityarteries.
Anatomicalregion Velocity(cm/sec)
Lowerlimbs Right Left
Commonfemoralartery 44 44
Proximalsegmentsuperficialfemoralartery 27 29 Middlesegmentsuperficialfemoralartery 23 25 Distalsegmentsuperficialfemoralartery 18 22
Poplitealartery 16 20
Proximalsegmentanteriortibialartery 14 19 Middlesegmentanteriortibialartery 10 13 Distalsegmentanteriortibialartery 9 11 Proximalsegmentposteriortibialartery 16 12 Middlesegmentposteriortibialartery 14 10 Distalsegmentposteriortibialartery 13 9 Proximalsegmentfibularartery 10 12
Middlesegmentfibularartery 8 9
Distalsegmentfibularartery 7 7
lobifemoralbypassforatotalabdominalocclusion.Verylimited literatureexistsregardingsurgicalinterventionsforTApatients. Mostreportedcasespresentendovascularsurgicalmanagement. Althoughendovascularmanagementislessinvasivethan extra-anatomicalaxillofemoralbypass,thepatientwasnotacandidate forendovascularstentgraftplacementduetotheincreasedriskfor vascularinjuryandsubsequentperforation.Consideringtheageof thepatient,22-years,openaorticrepairisthepreferredoptionand consideringthataxillobifemoralbypasssurgeryhasthesame long-termpatencyregardlessofage,astrongargumentcanbemadethat thisprocedureshouldbeavoidedinyoungerpopulations.However, duetothepatient’soverallfitnessandafterapreoperative assess-mentfromtheInternalMedicineandAnesthesiologydepartments aconsensuswasreachedbetweenthesetwodepartmentsandthe Surgerydepartment(i.e.thepositionofthesurgicalteamwasto performanaorticrepair)thatopenaorticrepairwasnota suit-ableprocedureduetothehighintraoperativerisk.Theleftaxillary arterywaschosenasinflowvesselovertherightevenafterhaving lowersystolicbloodpressurebecausetherightsubclavianartery
hadDopplerultrasonographyfindingssuggestiveofstenosisand nodistalaorticarchorleftsubclavianarterystenosiswasdetected throughthesameprocedure.Thiscasecontributestotheexisting literaturewithasuccessfulsurgicalcasethatdocumentedthrough variousimagingmodalitiesapatientforoverfiveyears.
Vascular surgery in TA cases becomes an option when the patientdoesnotimproveclinicallyafteradministrationofmedical treatment. Corticosteroids are the mainstay of the therapeu-tic management for TA, while immunosuppressant drugs (e.g. azathioprine, methotrexate, cyclophosphamide,mycophenolate, tacrolimus,andleflunomide)arewidelyusedasmaintenance ther-apy[7].Furthermore,biopharmaceuticalssuchasinfliximaband etanerceptaretherapeuticoptionsforselectedcases[12,13].Over time abouta fifthof thepatientsrequire surgicalmanagement andendovascularalternativesarepreferredduetotheirless inva-siveness.Percutaneous transluminal angioplastyand stent-graft placementareamongtheendovascularoptionsavailableforTA, while surgical revascularization can be performed via surgical bypassgrafting,patchangioplastyforshort-segmentlesionsand endarterectomy[14].
Extra-anatomicalaxillofemoralbypasssurgeryisa procedure thatisperformedinotherpathologiessuchasaorticcoarctation, aortic aneurysm, aortoiliac occlusive disease, and TA. In 2004, a case similar to the one presented by our group successfully performedanaxillobifemoralbypassforatotalabdominalaorta occlusion [15]. Another example in the literature of successful axillobifemoral bypass in TA to treat both atypical coarctation andbrachiocephalicinvolvement[16].Thecasepresentedcanbe assessedasasuccessfulprocedurebasedonpost-surgicalclinical andimaginghemodynamicimprovement.Althoughno intraoper-ativeorperioperativecomplicationswerereported,theseinclude brachialplexusinjury,axillarypulloutsyndrome,graftthrombosis, delayedpseudoaneurysmofthegraft,andgraftinfection.Clinically thepatienthad detectablebilaterallowerextremity pulses,had reducedparesthesiaanddysesthesia,aswellasnotreporting clau-dicationduringthethreemonthsafterthesurgicalprocedure.The patientalsohadincreasedpost-surgicalvascularvelocitiesinboth lowerextremities,aswellasanabdominalangiotomographywith apermeableaxillobifemoralprostheticgraft.
6. Limitations
Diseaseactivityisakeyfactorthatinfluencesthedecisionto proceed withrevascularization. Both endovascularand surgical revascularizationshouldbeavoidedduringacuteTAdisease activ-ityasreocclusionandcomplicationsduringthesurgicalprocedure [17].Diseaseactivityisdefinedbyacombinationofclinicalsigns andsymptoms,laboratoryassessmentand vascularimaging[7]. Bothacutephase reactants,erythrocytesedimentationrate,and C-reactiveproteinareusefultomonitorTAdiseaseactivity; how-ever,ontheirown,theseserologicaltestsprovetobeinsufficient to assesTA disease activity [18]. Although thepatient did not haveimagingorlaboratoryindicatorsforacuteTAdisease activ-ity,activevasculitiscannotbecompletelydismissed.Amongthe twosurgicalapproaches, opensurgicalintervention hasalower riskfor restenosisthanendovascularproceduresasa late com-plication(i.e.10-yearfollow-up),witharateofrestenosisof37% versus62%,respectively[6,19–21].Anotherlimitationofthestudy istheexclusionofotherpossibledifferentialdiagnoses.Middle aor-ticsyndrome(MAS)couldnotbecompletelydismissedduetothe patient’syoungage.MAScanbeduetocongenitalsyndromes neu-rofibromatosis,mucopolysaccharidoses,Williamssyndromeand, Alagillesyndrome[22].Nogenetictestswereperformedonour patient,henceageneticcausecouldbetheetiologybehindthe aorticstenosis.
7. Conclusion
OneinfiveTApatientsovertimebecomerefractoryto med-icaltreatment.Vascularsurgery isanoptionin theserefractory cases.Twotypesofsurgicalinterventionsareavailable endovas-cular and open surgical procedures. Among the endovascular optionsavailableforTAarepercutaneoustransluminalangioplasty and stent-graft placement, while surgical revascularization can beperformedviasurgicalbypassgrafting,patchangioplastyfor short-segmentlesionsandendarterectomy.Although endovascu-larmanagementhasfewercomplications,therateofrestenosisis higher.Patientsatriskofrestenosisandwhohaveincreased peri-operativevascularcanbenefitfromopensurgicalprocedures.The surgicalmanagementshouldbetailoredtothepatient’sneeds, tak-ingintoaccounttheextensionofthelesion,availableresources,and thetreatingsurgeon’sexperience.
DeclarationofCompetingInterest
Theauthorsdeclarethattherearenoconflictsofinterest rele-vanttothiswork.
Sourcesoffunding
ThisstudywassupportedbyCONACyT(ConsejoNacionalde CienciayTecnología)Grant#440591(Dr.JaimeMondragón).This researchdidnotreceiveanyspecificgrantfromfundingagencies inthecommercialsector.
EthicalApproval
Approvalfromtheethicalcommitteewasnotrequireddueto thenatureofthiscasereport.AbidingbytheDeclarationofHelsinki, patientanonymitywasguaranteed.
Consent
Uponhospitaladmission,thepatientsignedaninformed con-sentpermittingtheuseofherclinicalfileinformationfordidactic andresearchpurposes.
Authorcontribution
Studyconceptanddesign:OJZ,JDM
Acquisitionofdata:LNVR,AHR,MAL,MAMR,AMBB Analysisandinterpretationofdata:OJZ,JDM,GAFS,PPA Criticalrevision ofthe manuscriptfor important intellectual content:Allauthors.
Allauthorsreadandapprovedthefinalmanuscript.
RegistrationofResearchStudies
Alldatanecessaryfortheinterpretationofthiscaseisfoundin thetext.Nodatadepositoryor
registrywasused.
Guarantor
JaimeD.MondragonandOmarJiménez-Zarazúa
Provenanceandpeerreview
152 O.Jiménez-Zarazúaetal./InternationalJournalofSurgeryCaseReports61(2019)147–152
Acknowledgements
ThisstudywassupportedbyCONACyT(ConsejoNacionalde CienciayTecnología)Grant#440591.
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