时间 : 2009-12-06 00:03:08 来源:www.eyenet.com.cn
Melanomaisamalignanttumouroriginatinginthepigment-formingcells(melanocytes)oftheeye.Themostcommonsiteisthechoroidlayer,whichislocatedbetweenthesclera(whitefibroustissueoftheoutsideoftheeye)andretina(innermostlayer).Thechoroidcontainsbloodvesselsaswellaspigment.ThediseaseincidenceinEuropeandtheU.S.isapproximately7.5casesannuallypermillionpopulation.Theoutlookforlocalcuredependsstronglyonthesizeofandgrowthrateofthetumour.Thefive-yearsurvivalexpectationisapproximately70%forpatientstreatedeitherwithenucleation(surgicalremovaloftheeye)orradiotherapy.Theadvantagewithradiotherapyisthattheaffectedeyecanbesavedinmostcasesandvisionmaybepreserved.
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