An introduction to a Unicornuate Uterus

 

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Video taken from the channel: Megan Anderson


 

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Unicornuate Uterus

Video taken from the channel: Lifeline Superspeciality Hospital (Kerala)


 

Unicornuate Uterus

Video taken from the channel: DrInees Chiriyankandath


 

Unicornuate uterus with rudimentary uterine horn

Video taken from the channel: Darin Swainston


 

Unicornuate uterus with non-communicating functional horn…

Video taken from the channel: Fertility & Sterility


 

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A unicornuate uterus is a genetic condition that causes only half of your uterus to form. As a result, you have a single fallopian tube instead of. Unicornuate uterus is a rare genetic condition in which only one half of a girl’s uterus forms. A unicornuate uterus is smaller than a typical uterus and has only one fallopian tube.

This results in a shape often referred to as “a uterus with one horn” or a “single-horned uterus.”. If one of the ducts does not develop, only one Müllerian duct contributes to the uterine development. This uterus may or may not be connected to Müllerian structure on the opposite site if the Müllerian duct on that site undergoes some development. A unicornuate uterus has a single cervix and vagina. A unicornuate uterus is a rare congenital uterine abnormality (mullerian duct abnormality).

It is a complication in which the uterus does not develop completely and has only one fallopian tube instead of the normal two. What is a unicornuate uterus? To understand unicornuate uterus, a congenital abnormality of the uterus, it’s helpful to understand how the uterus is formed. During typical fetal development, two tubelike structures, called the Mullerian ducts, fuse together to create the uterus. The upper portions form the fallopian tubes.

A unicornuate uterus doesn’t necessarily prevent a woman from giving birth. However, she may need a caesarean section. Women with a unicornuate uterus are at an increased risk for preterm labor and miscarriage. If a hemi-uterus is present, it needs to be removed. A pregnancy could possibly begin in the uterine remnant.

Mary McMahon Last Modified Date: August 17, 2020. A unicornuate uterus is an unusually shaped uterus caused by errors during embryonic development. In a person with a unicornuate uterus, only half of the uterus has fully formed, with a single “horn” leading to one of the fallopian tubes.This condition is very rare. A unicornuate uterus or unicornis unicollis is a type of Müllerian duct anomaly (class II) characterized by a banana-shaped uterus usually draining into a. Having a unicornuate uterus can increase the risk of infertility miscarriage, and preterm birth, plus lead to ectopic pregnancy or the risk of rupture if the fetus implants in the rudimentary horn.

There are also additional pregnancy complications which may occur. A unicornuate uterus is a uterus that has a single horn and a banana shape. Approximately 65% of women with a unicornuate uterus also have a second smaller or rudimentary uterine horn.

The rudimentary horn can be solid or it can have a small cavity with a functioning endometrium.

List of related literature:

The ovaries are almond-shaped organs located on each side of the uterus below and behind the uterine tubes.

“Maternity and Women's Health Care E-Book” by Deitra Leonard Lowdermilk, Shannon E. Perry, Mary Catherine Cashion, Kathryn Rhodes Alden
from Maternity and Women’s Health Care E-Book
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The cavity of a unicornuate uterus is typically somewhat tubular, deviates to the right or left, and has a single cornu and fallopian tube.

“Clinical Gynecologic Endocrinology and Infertility” by Leon Speroff, Marc A. Fritz
from Clinical Gynecologic Endocrinology and Infertility
by Leon Speroff, Marc A. Fritz
Lippincott Williams & Wilkins, 2005

The distinguishing point of two diseases is that a uterine didelphys has two separate uterine horns and cervices and a bicornuate uterus has one cervix and one vagina (Siegel 2002a).

“Radiology Illustrated: Pediatric Radiology” by In-One Kim
from Radiology Illustrated: Pediatric Radiology
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One end of the uterine tube penetrates and opens into the uterus; the other end opens into the peritoneal cavity near the ovary.

“DiFiore's Atlas of Histology with Functional Correlations” by Victor P. Eroschenko, Mariano S. H. di Fiore
from DiFiore’s Atlas of Histology with Functional Correlations
by Victor P. Eroschenko, Mariano S. H. di Fiore
Wolters Kluwer Health/Lippincott Williams & Wilkins, 2013

Endometrial folds should be assessed while the uterus is being distended because they flatten out and become difficult to distinguish in the fully distended uterus.

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In a didelphic uterus, there are two completely separate uterine cavities, two cervices (which often unite externally), the vagina may be septate, and there may be associated ipsilateral absence of the kidney.

“Oxford American Handbook of Obstetrics and Gynecology” by Errol R. Norwitz, S. Arulkumaran, I. Symonds, A. Fowlie
from Oxford American Handbook of Obstetrics and Gynecology
by Errol R. Norwitz, S. Arulkumaran, et. al.
Oxford University Press, 2007

The two uterine tubes, or fallopian tubes, arise from the lateral angle of the uterus, pass laterally above the ovaries, and open into the peritoneal cavity.

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from Merrill’s Atlas of Radiographic Positioning and Procedures E-Book: Volume 2
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The endoscope is then inserted, and the fallopian tubes should be visible as a downward pointing loop located between each ovary and the uterus.

“Transgenic Animal Technology: A Laboratory Handbook” by Carl A. Pinkert
from Transgenic Animal Technology: A Laboratory Handbook
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Elsevier Science, 2014

It is difficult to distinguish a bicornuate uterus from a septate uterus because it may be impossible to assess the external fundal contour of the uterus.

“Radiology Secrets Plus E-Book” by E. Scott Pretorius, Jeffrey A. Solomon
from Radiology Secrets Plus E-Book
by E. Scott Pretorius, Jeffrey A. Solomon
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The ovaries, uterine tube, and uterus are attached to the dorsolateral walls of the abdominal cavity and to the lateral walls of the pelvic cavity by paired double folds of peritoneum called the right and left broad ligament (ligamentum latum uteri).

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Oktay Kutluk

Kutluk Oktay, MD, FACOG is one of the world's foremost experts in fertility preservation as well as ovarian stimulation and in vitro fertilization for infertility treatments. He developed and performed the world's first ovarian transplantation procedures as well as pioneered new ovarian stimulation protocols for embryo and oocyte freezing for breast and endometrial cancer patients.

Mail: [email protected]
Telephone: +1 (877) 492-3666

Biography: https://medicine.yale.edu/profile/kutluk_oktay/
Bibliography: oktay_bibliography

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6 comments

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  • Why would this woman remove her ovaries??? Did she not want children?? There’s been plenty of woman with unicornuate Uterus’ who go onto have children (there are certainly some risks like any pregnancy but still 100% possible) this is interesting…

  • I have a UU and I gave birth to two healthy children. The first at 35 weeks, the second at 34 weeks. Both breech but otherwise healthy and now teenagers.

  • What advice would you give us ladies trying to make a baby? I know everyone tells me, “relax and DO NOT rush anything! Enjoy this time in your life because after you have the baby, your life will forever be changed!”
    I’m getting a little anxious about TTC! You are going to have a HUMAN BEING INSIDE OF YOU?!? What?!? Crazy beautiful!! What a miracle ����������

  • Oh my gosh!! Your baby is almost going to be out in the world!!! Congratulations and thank you for keeping us posted (I have UU and PCOS am TTC using Clomid in the next couple of weeks for the first time)
    Your videos have been so helpful, so sending blessings your way.

  • Hi Meghan I recently found that I have unicornuate uterus and one Fallopian tube. I was shocked. I am so sad. I am not getting pregnancy from 4 months but my periods are regular. Can you give me some suggestions like posture during sex for conceiving

  • Hi.. I have a unicornuate uterus and trying pregnancy.are u taking best rest? Currently I am working. Kindly suggest whether I should quit my work for pregnant. Thanks