Hi.my wife is 19 weeks 2 days pregnant.earlier she had some bleeding and spotting in the early periods of pregnancy.our gynecologist told for double marker test.we did it.there came trisomy 21 screen positive result at 1:170.so doctor told for amniocentesis.we did it .now Amniocentesis result is normal.normak karyotype.but while doing amniocentesis doctor told there is Megacystis fetal abnormality.and it may require treatment.but our gynocologist said that it will be normal afterwards automatically.he told to do anamoly scan at 20 weeks.we will do it next week.so please advise us .i want to know whether fetal Megacystis will be normal spontaneously?