Question explored with the scientific record
Uterine fibroids after pregnancy
Fibroids usually shrink after delivery, but they raise the odds of bleeding and cesarean, and the evidence on what to do about them afterward is thin.
Most fibroids don't grow in pregnancy; in a study of 69 women with fibroids 8 cm or larger, size stayed unchanged in most cases [3][6]. What they do is complicate delivery. In that same group, 65 in 100 had a cesarean, 17 in 100 delivered preterm, and average bleeding at surgery was about 726 mL [3][6]. A larger review found similar patterns: cesarean 49 in 100 versus 21 in 100 without fibroids, postpartum hemorrhage 8 in 100 versus 3 in 100, and preterm delivery 19 in 100 versus 13 in 100 [4]. A Cameroon study found a history of fibroids carried about six times the odds of postpartum hemorrhage [5].
| Outcome | With fibroids | Without |
|---|---|---|
| Cesarean (large fibroids) | 65 in 100 | - |
| Cesarean (review) | 49 in 100 | 21 in 100 |
| Postpartum hemorrhage | 8 in 100 | 3 in 100 |
| Preterm delivery | 19 in 100 | 13 in 100 |
After delivery, the treatment options are real but the evidence is weak. Uterine artery embolization shrinks fibroids by roughly 20 to 64 percent and controls bleeding in 82 to 92 percent [2], but that's a 2001 review, not a modern trial. A 2018 case series showed embolization can work even when the blood supply comes from unexpected vessels [1]. No record here compares treated women to untreated women over years, and none tracks fertility after embolization in this population.
My call: if you have fibroids and you're pregnant or just delivered, the bleeding risk is real and worth planning for with your clinician; treatment afterward is reasonable if symptoms are bad, but the long-term safety and fertility data in this retrieval is thin. Confidence: moderate on the pregnancy risks, low on the best treatment choice after delivery.
Sources used 6
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Collateral Uterine Arterial Supply in the Setting of Various Uterine Pathologies
This pictorial essay describes three cases of collateral uterine arterial supply from the ovarian and round ligament arteries in the setting of postpartum hemorrhage, uterine arteriovenous fistula, and fibroids, highlighting the importance of recognizing these collaterals to opt…
DOI: 10.1055/s-0038-1676166 -
Uterine artery embolization
This literature review evaluates the effectiveness of uterine artery embolization in treating various obstetric and gynecological conditions, reporting high success rates in controlling postpartum hemorrhage, uterine arteriovenous malformations, and cervical pregnancies, while a…
DOI: 10.1016/s0899-7071(01)00307-2 -
P20.03: Vaginal versus abdominal scan in detection vasa previa in a lot of 364 patients with placenta previa and low lying placenta
A prospective observational study of 69 pregnant women with large uterine myomas (≥8 cm) assessed how fibroids influence obstetric outcomes, finding increased pain, higher preterm labor and cesarean rates, occasional fetal loss and postpartum hemorrhage, but no adverse neonatal …
DOI: 10.1002/uog.12039 -
Clinical presentation of fibroids
A comprehensive narrative review detailing the clinical presentation, symptomatology, reproductive implications, and pregnancy outcomes associated with uterine fibroids, emphasizing how size and location influence symptoms and fertility and outlining key evidence gaps.
DOI: 10.1016/j.bpobgyn.2008.01.008 -
Postpartum hemorrhage at Yaoundé University Hospital, Cameroon
This study investigates the prevalence, risk factors, and management outcomes of early postpartum hemorrhage (PPH) in a cohort of women who delivered at the Yaoundé University Hospital in Cameroon, revealing significant risk factors and a case fatality rate higher than recommend…
DOI: 10.1016/j.ijgo.2013.01.010 -
P20.02: Antenatal screening of placenta accreta
Large uterine myomas during pregnancy are linked to pain, preterm labor, and higher cesarean rates with neonatal outcomes largely preserved; antenatal ultrasound can predict placenta accreta; vaginal Doppler-enhanced scanning improves vasa previa detection; and a cervical varix …
DOI: 10.1002/uog.12038