1-2-3 Rule (Ovary)
The 1-2-3 rule is a simple aide-mémoire that describes the nomenclature of any small simple anechoic structure in the ovary on ultrasound:
<1 cm = follicle
1-2 cm = dominant follicle
>3 = cyst
The 1-2-3 rule is a simple aide-mémoire that describes the nomenclature of any small simple anechoic structure in the ovary on ultrasound:
<1 cm = follicle
1-2 cm = dominant follicle
>3 = cyst