Ch 44 - Pathology of the Ovaries

corpus luteum produces what hormone?

progesterone

how will the corpus luteum apear sonographically?

scalloped borders, hypoechoic center, echogenic ring around

if the volume on one ovary is double the amount on the other this is an indication of?

torsion

normal anechoic follicles should be less than _____

10mm

superiorly or extremely laterally placed ovaries may/may not be visualized by TVS because they are out of field of view.

may not

following hysterectomy ovaries tend to be located where?

more medially or directly superior to vaginal cuff

what sonographic sign does a corpus luteum usually have?

ring of fire

what is the function of the ovaries?

• mature oocytes until ovulation under influence of LH and FSH from pituitary

• synthesizes androgens (male hormones) and converts them to estrogens (female hormones)

what does the ovary do after ovulation?

produces progesterone to sustain early pregnancy until placenta can do so at 10 to 12 weeks of gestation

less than _____ is considered a simple cyst

2.5 cm

surgical intervention may be considered if …

a >6cm cysts persists more than 8 weeks

what is another option for reducing recurrent simple ovarian cysts?

ultrasound guided needle aspiration

simple cyst doppler will normally show…

low resistance flow

normal flow on ovarian artery doppler is…

low resistance

a mass showing minimal or absence of diastolic flow is usually…

benign

most common ovarian enlargement in young women

functional cysts

follicular cyst

forms when a mature follicle fails to ovulate of involute post ovulation

corpus luteum cysts

results from failure of reabsorption or excess bleeding into the corpus luteum

common sonography finding of a corpus luteum cyst

ring of fire

theca lutein cysts

largest functional cyst; associated with high hCG

polycystic ovarian syndrome

Imbalance of LH and FSH results in imbalance of