- Potential life-threatening complication
- Occurs during luteal phase or early pregnancy following IVF ovarian stimulation
- Caused by vasoactive substances that increase vascular permeability, ascitic fluid shift into abdomen
- Abdominal distension, nausea, vomiting, weight gain
- Pleural effusion, intravascular fluid depletion, hemoconcentration, thromboses, renal failure, shock
- USG – technique of choice
- Bilateral symmetrical enlarged ovaries (≥6 cm)
- Multiple peripheral-placed thin walled cysts/follicles
- Enlarged ovaries can prolapse out of pelvis into iliac fossa
- Echogenic stroma from edema and hemorrhage
- Free peritoneal fluid/ascites or pleural effusion
- Normal or increased vascularity on Doppler
Mittal, Kartik, et al. “Radiological illustration of spontaneous ovarian hyperstimulation syndrome.” Polish journal of radiology 80 (2015): 217.
GARDNER, GEORGEMARY. “Ovarian Hyperstimulation Syndrome (OHSS): How Much Do We Really Know About It?.” Radiology 196.2 (1995): 452-452.