<s>[INST] hi, my nephwe has ovarian cyst , and now she is in the first day of menstration, at which day she must do an ultrasound inorder to know if the cyst remained or ruptured? thank you [/INST] hi welcome to healthcaremagic forum most probably it will be a functional cyst you can do 5th day or after.if it is there rescan after 3 months.most of the functionakl cyst will disappear with in 3 months </s>