花斑糠疹皮肤镜表现
案例1Hypopigmentedpityriasisversicolor:(a)Adultpatientwithhypopigmentedvariantofpityriasisversicolorinvolvingtrunk.(b)Showingprimaryfolliculocentriclesionswithreducedpigmentarynetwork(brownarrow)withscalingattheborderoftheprimarylesion(greenarrow)(DinoliteAMZT,Edge3;magnification×50,polarizingmode).(c)Showssimilarchangeswithacontrasthalo(hyperpigmented)aroundtheprimarylesion(redarrow)(magnification×50).(d)Hypopigmentationoftheinvolvedhairfollicleasaresultoffollicularinvasionoftheyeastmarkedwithblackarrow(magnification50×,polarizingmode)
案例2Hyperpigmentedpityriasisversicolor:(a)adultpatientwithhyperpigmentedvariantofpityriasisversicolorinvolvinguppertrunk.(b-d)showingincreasedpigmentarynetworkoftheprimarylesionsurroundedbyacontrasthalo(hypopigmented)(Bluearrow)(magnification×50,polarizingmode)
案例3A,Clinicalappearanceofpityriasisversicolor(PV).Multiplehyperpigmentedmaculesandcoalescingpatchesinvolvedthemidbackandupperextremities.B,Hyperpigmentedmaculesscatteredontheabdomen.
Pityriasisversicolor(PV).A,Dermoscopicexaminationofthepigmentedlesionsfoundapigmentednetwork