A 10 cm ovarian cyst is detected incidentally in an 8 week pregnant woman; management:
Immediate removal by laparotomy
CT to rule out malignancy and secondaries
Second trimester surgery
Remove at time of cesarean section
For ovarian cysts >=10 cm, because of the substanial risk of malignancy, torsion, or labor obstruction, surgical removal is reasonable option. Surgery is preferably done in the second trimester.
Medical Illness Complicating Pregnancy