A twisted giant corpus luteum cyst in the third trimester of pregnancy in a multigravida: A case report

Corpus luteum cyst is common in early pregnancy and seldom exceeds 5 cm in diameter; many of which resolve before the end of the first trimester of pregnancy. Giant corpus luteum cyst in third trimester is very rare especially in naturally-conceived pregnancies. We hereby report a rare case of twisted giant corpus luteum cyst in the third trimester in a 33-year-old multigravida. She presented with acute abdominal pain and vomiting at a gestational age of 34 weeks. Ultrasound scan revealed a twisted giant right ovarian cyst. She underwent an emergency cesarean delivery and right oophorectomy. Histology report showed features that were diagnostic of corpus luteum cyst.