RESUMO
Objective ToexploretheclinicopathologicalfeaturesandMRImanifestationsofseveralspecialtypesofuterineleiomyomato improvethediagnosticlevelofit.Methods TheclinicopathologicalfeaturesandMRImanifestationsof18caseswithuterineleiomyomathatwere verifiedbypathologicanalysiswereanalyzedretrospectively.Results Amongthe18cases,therewere11casesofcellularleiomyoma,5casesof fattyleiomyomaand2casesofintravenousleiomyoma.Thetumorswereroundorirregular,withaclearmarginandamaximumdiameterof3.2cm to12.5cm.CellularleiomyomashowedisointensityonT1WI,homogeneouslyorslightlyhyperintensityonT2WI,and mostofthem werehyperintenseonDWI,whileafewisointense.Thelesionshowedearlyobviousenhancementandcontinuedtostrengthen,higher thanthemyometriumofthesameperiod.Fattyleiomyomaconsistsofsmooth musclecellsandadipocytesindifferentproportions, smoothmuscletissueshowedisointensityonT1WI,andisointensityorslightlyhyperintensityonT2WI,whileadiposetissueshowed hyperintensityonT1WIandT2WI,hypointensityonfatsequence,lighttomoderateenhancementforsmooth muscletissueandadiposetissue ntravenousleiomyomashowedirregularcircuity,shuttlesolidlumpin myometriumorneartheuterus,whichshowedisointenseon T1WI,andunevenorhyperintensityonT2WI,moderateheterogeneousenhancement,multiplecircuityvesselswithinoraroundthelesions.Allthe threetypesofuterineleiomyomaabovehavecertainMRIfeaturesandareassociatedwithpathology.Conclusion TheMRIfindingsof thecell-richleiomyomashowthattheedgeofthetumorisclear,ofwhichshowhyperintensityonDWI,andearlyandcontinuousenhancement, whilethedegreeofenhancementishigherthanthatinthemyometriumofuterusatthesameperiod.MRIofuterineadiposeleiomyomashows"whirlpool"or "braided"distributionoffatsignalinthetumor,andnoenhancementinadiposetissue;MRIofvenousleiomyoma showsirregulartwistsandturnsbetweenthewallofuterusorbesidetheuterus,andmoderateorunevenintensificationafterenhancement. withoutI.
RESUMO
Objective To summarize the experiences in using Bio-Gide and Bio-Oss for guided bone regener- ation in dental implantation.Methods In 28 cases of bone deficiency,Bio-Gide membranes were applied to cover alveolar defects filled with the Bio-Oss bone powder.In postoperative periodic follow-.up,the bone regeneration effect was observed by successive clinical and X-ray examination.Results 38 implants were inserted in the 28 patients and Bio-Gide membranes were used in the sites of the 38 implants.Alveolar bone defects were filled with new bone in 27 patients,1 implant loosed because of inflammation.37 implants had ideal osseointegration at stageⅡsurgery and were prosthetic rcconstructed successfully.No implant loosed during the observed period of 15 months to 4 years. Conclusion Bio-Gide and Bio-Oss have ideal effect of guided bone regeneration in dental implantation.