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肺癌英文,1,BronchogenicCarcinoma(LungCancer),Respiratorydepartment,肺癌英文,2,Definition,Bronchogeniccarcinomareferstothemalignanttumorwhichgrowsinthebronchus.Originatingfrommucusorglandofbronchus.,肺癌英文,3,Incidenceandmortality,Bronchogeniccarcinomahasincreasedremarkableinincidenceandmortalityduringhalfofthecenturyandhasbecomethemostfrequentvisceralmalignantdiseasesofmen.Themortalityoflungcancerholdthefirstplaceamongallkindscarcinomas.,肺癌英文,4,Etiology,Thecauseoflungcancerisunknown.Itisbelievedthattherearefollowingrelatedfactors.1.Excessivecigarettesmoking:Smokingindex(BrinkmanIndex)isequaltocigarettesperdaysmokingtime(years).Passivesmokingisalsoacarcinogenfactor.,肺癌英文,5,Etiology,2.Atmosphericpollution.Itwasfoundthatcarcinogenicfactorisbenzpyrene.3.Occupationalfactors.4Radioactivityintheatmosphere.5.DietsandNutrition.6.Chronicirritation.7.Geneticfactors.,肺癌英文,6,PathologyAndClassification,1.Accordingtothepositionoftumorarisingfrom,itcanbedividedintotwotypes.Centraltype:Tumorarisesfrommainbronchus,lobarandsegmentalbronchus.Peripheraltype:Tumorarisesbeyondsegmentalbronchus.,肺癌英文,7,PathologyAndClassification,2.Accordingtocytology,itisconvenienttoclassifyintofourkindsoftypes.(1).Squamouscellcarcinoma.(2).Smallcellanaplasticcarcinoma.(3).Largecellanaplasticcarcinoma.(4).Adenocarcinoma(includingalveolarcellcarcinoma).,肺癌英文,8,PathologyAndClassification,Accordingtothedifferentprinciplesofmanagement,itisdividedintotwotypes.SCLC:smallcelllungcarcinoma.NSCLC:nonsmallcelllungcarcinoma.,肺癌英文,9,Clinicalfeatures,Therearenosymptomsofearlylungcancerinsomepatients.Symptomscausedbylungcancerarenon-specific:perhapsanaudiblewheezeoraslightcough,symptomsofinfection(fever,purulentsputum),ofobstruction(wheezing,dyspnea),orulcerationofbronchialmucosa(hemoptysis).,肺癌英文,10,Clinicalfeatures,1.Respiratorysymptoms.(1).Cough:(2).Hemoptysis:(3).Dyspnea.:(4).Wheezeorstridor:(5).Chestpain:(6).Fever:,肺癌英文,11,Clinicalfeatures,2.Symptomscausedbythenearorgansortissueinvolvedbytumor.(1).Dysphagia.(2).Hoarseness.(3).Pleuraleffusionduetoinvasionofthepleura.,肺癌英文,12,ClinicalFeatures,(4).Hornerssyndrome.Itiscausedbyinvadingthecervicalsympatheticgangliaontheinvolvedsidethepupilissmallptosisoftheupeyelids,retractionoftheeyeballandnosweatoftheface.(5)Cardiaceffusion,肺癌英文,13,Clinicalfetures,(6).Superiorvenacavalsyndrome.Duetoobstructionofthesuperiorvenacaval,thepatientmayhavenoticedthathiscollaristight,theneckisenlargedandthejugularveinandtheveinsofanteriorchestwallaredistensionandedemaoftheface.3.Symptomscausedbymetastasis.liver,skeleton,brain,supraclaviclelymphnodes.,肺癌英文,14,Clinicalfetures,4.Paraneoplasticsyndrome.Becausetumorcellcansecreteectopichormone,antigenorenzymethepatientswithLungCancersometimesmayhavesomeparaneoplasticsyndromeIncluding:(1)Collagentissuedisordersuchasfingerclubbing,hypertrophicpulmonrayosteoarthropathy。,肺癌英文,15,Clinicalfeatures,(2)EndocrinedisordersincludingCushingssyndrome,syndromeofinappropriateantiduretichormonesecretion(SIADHS),(3)Neuropathicormyopathicdisordersincludingpolyneuritis,cerebellardegeneration,mentalabnormalitisetc(4)others.,肺癌英文,16,RadiographicFindings,Theappearanceonthex-rayfilmdependsontheposition,sizeandstageofthetumor1.Peripheraltype:Itmaybevarioussuchasinfiltrativeornodular,lobulatedorumbilicussign,linerprotrusionsfromtheshadowintothesurroundinglung,cavitationwhichisofteneccentricirregularintheinnerwallowingtothenecrosisoftheneoplasm.,肺癌英文,17,RadiographicFindings,2Centraltype(1)Directappearance:Unilateralenlargementofthehilarshadowduetothetumoritselforenlargedlymphnodes.(2)Indirectappearance:Includinglocalemphysema;obstructivepneumoniaeitherlobalorsegmental;obstractiveatalectasis(collapse)lobeorsegment.,肺癌英文,18,AdvantageofCT:,(1)Somesmalllesion,lesionbehindofcardiacorbloodvessel,andpathologylocatedinapicaloflungcanbefoundbyCTwhichcantbefoundbychestx-ray.(2)LymphnodesalonghilarormediastinacanbefoundbyCT.,肺癌英文,19,Fig1Atelectasis,Rightupperlobe,肺癌英文,20,Fig3MassWithFuzzy,RightUpperLObe,肺癌英文,21,Fig4MassInrightLobe,Lateralportion,肺癌英文,22,Fig5CavitatingBronchialCarcinoma,肺癌英文,23,Examinationofsputum,Cytologicexaminationofbronchialsecretions(orsputum)mayrevealexfoliatedmalignantcellsrecognizabletothepathologistwhoisspeciallytrainedforsuchwork.Thesputummusttobefresh,sendontime,repeat(4-6times).,肺癌英文,24,Bronchoscope,Bronchoscopemayverifytheexistenceoftumor,ofCentraltype,andcytologicdiagnosisoflungcancershouldbeobtainedthoughFBC.Blindbiopsymaybehelptothediagnosisofthetumorbeyondtherangeofbronchoscopevision,肺癌英文,25,Fig1NormalTrachea,Fig2NormalCarina,肺癌英文,26,Fig3SquamousCellCarcinoma,Trachea,Fig4AdenocarcinomaLeftLingularBronchus,肺癌英文,27,Fig5AdenocarcinomaRightTruncalIntermedus,Fig6ExtrinsicPressureTrachea,肺癌英文,28,LungBiopsy,1.Biopsywithfiberopticbronchoscope;2.TransthoracicneddlebiopsywithCTdirectedorBtypeultrasonic;3.Biopsywiththoracoscopy;4.Biopsywithmedistinoscopy;5.Exploratorythoracotomy.,肺癌英文,29,Diagnosis,1.Symptom-free:Generalinvestigationofhighriskgroup(male,mornthan40yearsold,cigaretteconsumption20/perday).Takingax-rayfilmandexaminingsputumforcancercelleveryhalfyearEarlystageofthebronchogeniccarcinomaReferstothetumorisstilllocatedatthebronchus,noinvadethehilarlymphnodes,pleuraaswellasdistantmetastases,itsdiameterisoften3cm.,肺癌英文,30,Diagnosis,Diagnosisprocedure:1.X-rayfilm(-)andsputumforcytology(-)FBC(-)followuponceamonth/year.2.X-rayfilm(+)andsputumforcytology(+)FBCtoidentifythecancercelltypeCT,MRItherapy.,肺癌英文,31,Diagnosis,Diagnosisprocedure:3.X-rayfilm(-)andsputumforcytology(+)rulingoutthetumorofupperrespiratorytractfirstFBC.4X-rayfilm(+)andsputumforcytology(-)FBC(-)lungbiopsy.,肺癌英文,32,Differentialdiagnosis,1.Solitarynodule:Tuberculoma,BenignTumor2.Cavitation:LungAbscess,Tuberculosis,3.Enlargementofhilarshadow:Hamartoma4.Others:PleuralEffusion,WideningOfMediatinal.,
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