UT pathology Flashcards
How does the uterus develop?
- Paired Mullerian ducts descend into the pelvis at week 13 of fetal life
- fusion occurs from the inferior (Cx) to the superior (fundus)
- resorption of the center occurs last
What must be evaluated in all cases of UT anomalies?
Urinary tract
Do the ovaries develop from mullerian ducts?
No
Are ovaries generally normal in the presence of Mullerian anomalies?
Yes
What is the gold standard for evaluating Mullerian anomalies?
MRI=gold standard but can be well evaluated with 3D U/S
Name the Mullerian duct anomalies?
- Failure of formation
- Failure of fusion
- Failure of dissolution
- Failure of dissappearance
Type of failure of formation where there is no vagina, Cx, UT, or tubes?
Complete agenesis Failure of formation
Type of failure of formation that has a unicornuate UT, usually with a blind ending UT body associated
Partial agenesis Failure of formation
Types of Failure of fusion
- Uterus Didelphys
2. Bicornuate
2 separate bodies, 2 Cx’s each with their own tube doesn’t share myometrium
Uterus Didelphys
#1 most common Mullerian anomaly, 1 vagina, 1 or 2 CX's and variable lack of fusion in the uterine body
Bicornuate
The median septum fails to dissolve after fusion of the 2 separate Mullerian ducts?
Failure of dissolution
What are the types of uterus that develop as a result of failure of dissolution and which is the least severe?
Septate UT Arcuate UT (the least severe)
Also Known as persistent structures of Vestigial remnant
Failure of disappearance
1 most common Vestigial remnant
Gartner’s duct cyst
Arise from the Caudal remnants of the Wollfian duct= Mesonephric duct
Gartner’s duct cyst
Where do Gartner’s duct cysts occur?
On the anterolateral wall of vagina
Drug given between 1940-1970 to pregnant women in the mistaken belief that it would decrease the risk of pregnancy loss and complications
DES (Diethylstibesteid)
What are the effects of DES exposure?
- Clear cell carcinoma of the vagina
- Cervical cancer
- T shaped uterus (infertility)
- Intrauterine wall defects-amniotic band syndrome in pregnancy
- Poor pregnancy outcome
What are the two congenital vaginal malformations?
- Mullerian duct anomalies
2. Urogenital sinus malformations
Types of urogenital sinus malformations
- Vaginal atresia = absence of vagina
- Vaginal septa = Transverse septa in vagina
- Vaginal duplication = Longitudinal septa
1 most common tumor of the female pelvis, most common in African-American women, usually multiple, Better detected with MRI
Leiomyomas = fibroids
What are the symptoms of leiomyomas?
- Pain- especially when size increases and with infarction
- Menorrhagia - fibroids prevent the efficient contraction of the UT during menses
- Infertility - repeat spontaneous abortions (especially with submucous)
Locations of leiomyoumas
- Submucosal
- Intramural (interstitial)
- Subserosal
- Cervical (Uncommon)
- Intraligamentus
Under the uterine endometrium, projects into UT cavity, repeated spontaneous abortions because the fertilized egg can’t successfully implant on it, may be pedunculated
Submucosal