Pathology Flashcards
(173 cards)
How are the ovaries positioned?
Varies in position
Influenced by uterine location and ligament attachments
What do the ovaries look like structurally?
Paired, almond shaped structures situated one on each side of the uterus close to the lateral pelvic wall
Where are the ovaries found in an anteflexed midline uterus?
Laterally or posterolaterally
What is the normal sonographic appearance of the ovaries?
Homogeneous echotexture
May exhibit central, more echogenic medulla
Small anechoic or cystic follicles - peripherally in cortex
Appearance varies with age and menstrual cycle
What are the 3 phases of the menstrual cycle?
Menstruation - Days 1 to 4
Proliferative - Days 5 to 14
Secretory or Luteal - Days 15 to 28
What happens during the proliferative phase?
Many follicles develop and increase in size until about day 8 or 9 of cycle due to stimulation by both FSH and LH
How many follicles become dominant per cycle and what is its measurement at time of ovulation?
One dominant follicle
Reaching 2.0-2.5 cm at time of ovulation
During the proliferative phase, what is Cumulus Oophorus?
An eccentrically located, cystic like, 1 mm internal mural protrusion
During the proliferative phase, what does visualization of a cumulus indicate?
A mature follicle and imminent ovulation
No reproducible sonographic sign reliable
Other follicles become atretic
During the late proliferative phase, what develops if fluid in the nondominant follicles do not reabsorb?
Follicular cyst
During the late proliferative phase, what happens to the dominant follicle?
Usually disappears immediately after rupture at ovulation
Describe what a follicle occasionally looks like during the late proliferative phase.
Follicle decreases in size and develops a wall that appears crenulated (scalloped)
When is fluid in the cul de sac commonly seen?
After ovulation and peaks in early luteal phase
What is commonly seen in a normal ovary?
Multiple small, punctuate, echogenic foci
Following menopause, what happens to the ovary and follicles?
The ovary atrophies and follicles disappear with increasing age
After a hysterectomy, what happens to the ovaries?
Ovaries can be difficult to visualize with ultrasound
What is the ovary volume of an adult menstruating female?
As large as 22 cc
Ovary volume of 9.8 plus or minus 5.8 cc
What ovary volume is considered abnormal for a postmenopausal patient?
More than 8 cc
When the ovary volume is _______ that of the opposite side! this should be considered abnormal, regardless of actual size.
Twice
What is the ovary’s function?
To mature oocytes until ovulation under influence of LH and FSH from the pituitary gland
What is the ovary synthesizing?
Androgens (male hormones) and converts them to estrogen (female hormones)
What is produced after ovulation occurs and how do this help a pregnant women?
Produces progesterone after ovulation to sustain early pregnancy until placenta can do so at 10-12 weeks of gestation
What size does the dominant follicle enlarge to about 10 days into the mid and late follicular phases of cycle?
Enlarges from 3 mm to 24 mm
What follows the enlargement of the one dominant follicle?
Ovulation