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A 41-year-old female asked:

A transvaginal ultrasound revealed 5 follicles in my left ovary and one follicle in right ovary. dr didn't say much. i cannot find anything about this on internet. what would cause this big difference?

1 doctor answer1 doctor weighed in
Dr. John Berryman
Obstetrics and Gynecology 56 years experience
The presence of an uneven distribution of unruptured follicles between "left and right ovaries" by ultrasound is a normal finding, as there is no symmetry in ovulation, with only the most mature eggs "chosen" by stimulation from pituitary hormones from the ovaries, and one ovary may predominate, causing apparent asymmetry.
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Last updated Sep 23, 2022

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