Flashcards in Lecture 26: Congenital Abnormalities CPC Deck (14)
What are the characteristics of female genital ducts?
Mullerian (paramesonephric) ducts form most of the reproductive tract
Uterine tubes (fallopian tubes) develop from the unfused portion of the paramesonephric ducts while the inferior portions fuse and form the UTEROVAGINAL PRIMORDIUM
The sinovaginal bulbs then fuse to form the VAGINAL PLATE
Central cells of the vaginal plate degenerate to form the LUMEN OF THE VAGINA
This lumen is separated from the uterogenital sinus cavity by the HYMEN
What are vertical fusion defects?
(fusion of uterus to the urogenital sinus)
1. High transverse vaginal septum
2. Mid transverse vaginal septum
3. Low transverse vaginal septum
4. Imperforate hymen
5. Cervical agenesis
6. Cervical Dysgenesis
7. Mullerian agenesis aka Mayer-Rokitansky-Kuster-Hauser-Syndrome (MRKH)
-vaginal agenesis…no vagina or ovaries
TRANSVERSE SEPTUM blocks canal of vagina
What is Mayer-Rokitansky-Kuster-Hauser Syndrome (MRKH)?
No vagina or ovaries
What are the lateral fusion defects?
When the two sides don’t meet in the middle (fusion of the paramesonephric duct)
1. Uterus Didelphys
2. bicornuate uterus
3. septate uterus
4. Unicornuate uterus
5. Blind uterine horn, connected
6. Blind uterine horn, separate
7. Uterus Didelphys with obstructed hemi-vagina
If woman has breast development but no menarche, then you need to ask what?
Does girl have uterus?
Vertical or lateral fusion defect?
Rectal exam to feel uterus….
What are classifications of Mullerian anomalies?
Vertical anomaly defects
Horizontal anomaly defects
What are the characteristics of Mullerian agenesis?
Incidence of 1/5000 female births
Present with primary amenorrhea
Normal ovarian function, normal sexual development
Absent vagina or absent/abnormal mullerian structures
Must differentiate from androgen insensitivity syndrome (AIS)
Etiology not known
What is non-surgical treatment for mullerian agenesis?
Pressure technique (shoving dildos in space of vagina to create space)
Takes 6-12 months
What is differential for girl that has belly pain without menses?
Lower septum and imperforate hymen, blood is accumulating
What are the characteristics of imperforate hymen?
Failure degeneration cells Mullerian duct and urogenital sinus
Not considered mullerian anomaly
If girl presents to clinic with normal menses but severe vomiting that is associated with period, what should you think of?
Think of lateral vaginal defects
Uterus didelphys with hemiblock
What is the most common mullerian anomaly?
What is a septate uterus?
Lateral fusion defect
Fusion of the horns
However, no resorption of the septum (the partition of the uterine cavity that SHOULD disappear)