The corpus luteum is a temporary endocrine structure involved in ovulation and early pregnancy.
The remnants of the follicle is called the corpus luteum and ranges from 2 - 5 cm. As it matures, it involutes. The corpus luteum produces oestrogen and progesterone, maintaining optimum conditions for implantation if the ovum is fertilised:
- fertilised : the corpus luteum continues to produce these hormones and maximises the chance of implantation into the endometrium ; it reaches a maximum size at ~ 10 weeks and finally resolves at around 16 - 20 weeks
- not fertilised : the corpus luteum involutes and turns into a corpus albicans by around 2 weeks
May be seen as a thick walled cyst with characteristic "ring of fire" peripheral vascularity.
General considerations include
The term corpus luteum is derived from the Latin meaning "yellow body" where corpus = body and luteum = yellow
- 1. Frates MC, Doubilet PM, Durfee SM et-al. Sonographic and Doppler characteristics of the corpus luteum: can they predict pregnancy outcome? J Ultrasound Med. 2001;20 (8): 821-7. J Ultrasound Med (abstract) - Pubmed citation
- 2. Durfee SM, Frates MC. Sonographic spectrum of the corpus luteum in early pregnancy: gray-scale, color, and pulsed Doppler appearance. J Clin Ultrasound. 1999;27 (2): 55-9. J Clin Ultrasound (link) - Pubmed citation
- 3. Atri M. Ectopic pregnancy versus corpus luteum cyst revisited: best Doppler predictors. J Ultrasound Med. 2003;22 (11): 1181-4. J Ultrasound Med (full text) - Pubmed citation
- 4. Semelka RC. Abdominal-Pelvic MRI. Wiley-Blackwell. (2010) ISBN:0470487755. Read it at Google Books - Find it at Amazon
Synonyms & Alternative Spellings
|Synonyms or Alternative Spelling||Include in Listings?|