Submucosal fibroids bulge into the uterine cavity.
Tumors called
submucosal fibroids — which bulge into the uterine cavity — may make it more difficult for a woman to get pregnant and stay pregnant, because they can interfere with an egg's ability to implant in the womb.
Not exact matches
Some
submucosal or subserosal
fibroids are pedunculated — they hang from a stalk inside or outside the uterus.
I came to that conclusion because you stated
fibroids don't cause heavier bleeding unless they are
submucosal which account for 10 % or less of all uterine
fibroids.