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Hyperreactio luteinalis in a normal pregnancy: sonographic and MRI findings
M A Ghossain1, J N Buy, A Ruiz
1Department of Radiology, Hôtel Dieu de Paris, France. radiologie.htd@htd.ap-hop-paris.fr
Journal of Magnetic Resonance Imaging : JMRI
|December 16, 1998
Summary
Hyperreactio luteinalis, a rare condition, can occur in normal pregnancies. This case highlights key diagnostic features of symmetrical masses and uniform loculi, aiding in correct identification.
Area of Science:
- Reproductive Endocrinology
- Obstetrics and Gynecology
Background:
- Hyperreactio luteinalis is a rare, benign ovarian hyperstimulation that can occur during pregnancy.
- It is often associated with conditions of increased human chorionic gonadotropin (hCG) levels, such as multiple gestations or gestational trophoblastic disease.
Observation:
- A case of hyperreactio luteinalis in an otherwise normal singleton pregnancy is presented.
- The patient presented with ascites, but without evidence of peritoneal implants or adenopathy.
- The ovarian masses exhibited a symmetrical and bilateral pattern.
Findings:
- The key diagnostic finding was the uniform size of the loculi within the ovarian masses, measuring 1 to 3 cm in diameter.
- This symmetrical, bilateral presentation with uniform loculi is characteristic of hyperreactio luteinalis.
Implications:
- Accurate diagnosis of hyperreactio luteinalis is crucial to avoid misdiagnosis of malignancy.
- Recognition of these specific imaging features can guide clinical management and prevent unnecessary surgical intervention.
- This case underscores the importance of considering benign conditions in the differential diagnosis of adnexal masses during pregnancy.

