Dominant ovarian follicle

A dominant ovarian follicle refers to the follicle that enlarges to release an ovum during a menstural cycle. Usually approximately 10 Graafian follicles begin to mature where one becomes a dominant follicle and the rest become atretic ovarian follicles. After release of the ovum the remainder of the dominant follicle turns into a corpus luteum and finally into a scarred corpus albicans. On occasion there can be two or more dominant follicles.

Generally the accepted ultrasound size cut off for a dominant follicle is between 1-2 cm (see the 1-2-3 rule).

Anatomy: Abdominopelvic
Share article

Article information

rID: 15587
Section: Anatomy
Tag: stub, cases, refs
Synonyms or Alternate Spellings:
  • Dominant follicles
  • Dominant follicle - ovary
  • Dominant follicle - ovaries

Support Radiopaedia and see fewer ads

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.