Hemorrahagic ovarian cyst
Hemorrhage into a cystic space in ovarian parenchyma.
- Avascular hypoechoic adnexal "mass" with fine lacy internal pattern
- May appear as mixed echogenicity mass
- Clot retraction → rim of fluid within cyst surrounding clot
- Clot fragmentation → angular margins of clot fragments
- Majority resorb quickly and leave no sequela on 6 week follow-up scans
- May rupture