USMLE Step 2 CK Lecture Notes 2019: Obstetrics/Gynecology (Kaplan Test Prep)

Figure II-4-9. Submucosal   Leiomyoma

Changes in size are dependent on the reproductive life stage of the woman.

and receive their   blood   supply  from    another abdominal   organ   (such   as  the

omentum or  the mesentery   of  the intestine).

Slow    growth: Most    leiomyomas  are small,  grow    slowly, and cause   no

symptoms.   Only    when    massive in  size    do  they    cause   pelvic  pressure

symptoms.

Rapid   growth: Estrogen    receptors   are increased   in  leiomyomas, causing

rapid   enlargement during  times   of  high    estrogen    levels, such    as  pregnancy.