Reproductive: Acquired Flashcards
Salpingitis isthmica nodes (nodular scarring of the Fallopian tubes)
Note: Usually involving the proximal 2/3 of the uterine tubes.
Salpingitis isthmica nodosa is strongly associated with…
Infertility and ectopic pregnancy
Persistant vaginal bleeding s/p dilation and curettage
Think uterine AVM
Note: Tubular/serpiginous anechoic structure in uterine myometrium with high velocity color Doppler.
Infertility
Think Asherman’s syndrome
Note: Multiple intrauterine filling defects.
Fever
Think endomteritis
Note: Irregular thickening of the endometrium (yellow arrow) and fluid-filled endometrial cavity containing gas (blue arrow).
Endopelvic facia
Ligaments and fascia that provide the main support for the anterior and middle pelvic compartments (bladder/urethra and vagina/cervix/uterus)
Levator ani
The main muscular component of the pelvic floor composed of the puborectalis, pubococcygeus, and iliococcygeus
Urogenital diaphragm
An anatomic landmark (the most caudal/superficial musculofascial structure of the pelvic floor) used to classify urethral injury
What are the two components of pelvic floor relaxation?
- Pelvic floor descent
- Pelvic floor widening
Note: These can be graded on sagittal MRI during maximum strain.
Pubococcygeal line
A line drawn from the inferior margin of the symphysis pubis to the junction between the first and second coccygeal elements
Note: This is helpful when evaluating the pelvic floor on MRI.
H line (pelvic floor MRI)
A line drawn from the inferior margin of the pubic symphysis to the posterior aspect of the puborectalis muscle sling
Note: This is helpful when evaluating hiatal enlargement of the pelvic floor on MRI.
M line (pelvic floor MRI)
The shortest distance between the posterior aspect of the puborectalis muscle sling and the pubocyccygeal line
Note: This is helpful when evaluating pelvic floor descent on MRI.
What is considered hiatal enlargement when evaluating the pelvic floor on MRI?
H line >6 cm (pubic symphysis to puborectalis muscle sling)
What is considered abnormal hiatal descent when evaluating the pelvic floor on MRI?
M line >2 cm (puborectalis muscle sling to pubococcygeal line)
Imaging features of pelvic floor dysfunction
- Hiatal enlargement (H line >6 cm)
- Longer pelvic floor descent (M line >2 cm)
Pelvic floor MRI protocol
- Steady state (T2 imaging in 3 planes)
- Dynamic state (Sagittal T2 fat sat during Valsavla, Kegel, and/or defecation)
Cystocele
Bladder descent >1 cm below the pubococcygeal line
Treatment for cystocele
- Retropubic urethropexy (if normal stress incontinence)
- Pubovaginal sling (if there is also urethral hypermobility)
Imaging definition of uterine prolapse
Descent of the cervix (or posterior vaginal fornix) >1 cm below the pubococcygeal line
Note: Should be measured when there is no stool in the rectum as this can “prop up” the uterus.
What are the major categories of pelvic organ prolapse?
- Cystocele (anterior compartment)
- Uterine prolapse (middle compartment)
- Rectocele (posterior compartment)
Rectocele
Abnormal rectal bulging due to weakening of the rectovaginal fascia (described by how far they bulge relative to the anal canal)
Major risk factor for uterine prolapse
Hysterectomy
Risk factors for cystocele
Multiple prior vaginal births
Risk factors for rectocele
- Vaginal surgery
- Hysterectomy
- Chronic constipation
- Old age