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Subserocal fibroid
My wife is 33 and conceived through IUI on 28 August 2026, but recently had a missed miscarriage managed with medication.
Earlier scans showed a subserosal fibroid of approximately 4.2–4.5 cm.
The latest scan described a 7.6 × 5.6 × 7.2 cm mass behind the uterus/cervix, suspected to be a subserosal fibroid.
Could this have contributed to the miscarriage, and what tests can confirm whether it affects the uterine cavity?
Should it be removed before another pregnancy/IUI, and how long should we wait before trying again, with or without surgery?
Answers (7)
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A subserosal fibroid sits on the outer wall of your uterus. That makes it less likely than one growing inside the cavity to have caused your miscarriage. But a mass this size, sitting right behind the uterus, can still affect blood supply and space around it. The real jump in size since your last scan is what needs attention now.
Next Steps
An MRI or saline sonography will show whether it's affecting your uterine cavity or pressing on it. If it is, most gynaecologists suggest a myomectomy before trying again. The usual wait after that surgery is about 3 to 6 months before your next pregnancy or IUI.
Health Tips
Please see your gynaecologist to go over both scans together. That way, the growth and surgery timing get planned against your actual reports.
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