Theca lutein cyst is a type of bilateral functional ovarian cyst filled with clear, straw-colored fluid. These cysts result from exaggerated physiological stimulation (hyperreactio luteinalis) due to elevated levels of beta-human chorionic gonadotropin (beta-hCG) or hypersensitivity to beta-hCG.[1][2] On ultrasound and MRI, theca lutein cysts appear in multiples on ovaries that are enlarged.[3]
Usually, these cysts spontaneously resolve after the molar pregnancy is terminated. Rarely, when the theca lutein cysts are stimulated by hormones called gonadotropins, massive ascites can result. In most cases, however, abdominal symptoms are minimal and restricted to peritoneal irritation from cyst hemorrhage.[7] Due to the enlargement of the ovaries, there is an increased risk for torsion.[3] Surgical intervention may be required to remove ruptured or infarcted tissue.[7]
^ abYacobozzi M, Nguyen D, Rakita D (February 2012). "Adnexal masses in pregnancy". Seminars in Ultrasound, CT, and MR. Multimodality Imaging of the Pregnant Patient. 33 (1): 55–64. doi:10.1053/j.sult.2011.10.004. PMID22264903.
^Lauren N, DeCherney AH, Pernoll ML (2003). Current obstetric & gynecologic diagnosis & treatment. New York: Lange Medical Books/McGraw-Hill. p. 708. ISBN0-8385-1401-4.
^ abLavie O (2019). "Benign Disorders of the Ovaries & Oviducts". In DeCherney AH, Nathan L, Laufer N, Roman AS (eds.). CURRENT Diagnosis & Treatment: Obstetrics & Gynecology (12th ed.). New York, NY: McGraw-Hill Education.