Asherman’s syndrome, also known as Intrauterine Synechiae(adhesions) and Uterine Synechiae is a rare gynecological condition in which the uterine cavity develops adhesions (scar tissue). An adhesion is nothing but a band of scar tissue which initially develops as a part of the human body’s repair mechanism in response to any tissue disturbances, for instances due to previous surgeries. In most of the cases, the front & back walls of the uterus stick to each other. In other cases, adhesions develop only in a small portion of the uterus. The extent of adhesion helps to determine whether the case is mild or severe. Adhesions can be thick, thin, spotty in location or confluent.
In majority of the cases, Asherman’s syndrome occurs in women who have had procedures done associated with the uterus & pregnancy. In other cases Asherman’s syndrome can be caused due to infections involving uterus or instrumentation before pregnancy.
Procedures of the uterus related with pregnancy
Dilation & Curettage or Dilation & Evaluation:Dilation is performed to widen the cervix so as to allow instruments into the uterus. Curettage is the procedure of scraping the walls of the patient’s uterus. When D&C or D&E is done due to miscarriages, abortions and retained products of conception there’s a risk of developing Asherman’s syndrome.
Postpartum curettage: Here, curettage is performed due to postpartum complications such as retained placenta or postpartum hemorrhage.
Procedures of the uterus like D&C for heavy bleeding, and other uterine surgeries are also risk factors.
Infections involving uterus can include:
Most of the symptoms of Asherman’s syndrome are related to the menstrual cycle or pregnancy. But it is possible that a patient suffering from Asherman’s syndrome may not show any symptoms at all.
The following procedures are used to diagnose Asherman’s syndrome.
Hysteroscopy: Hysteroscopy is the gold standard for diagnosing Asherman’s syndrome. It is a procedure in which a small & lighted instrument known as hysteroscope is inserted via the vaginal opening of the patient. This helps the doctor to have a look at the patient’s uterus. Most women do not require anesthesia for this procedure.
Transvaginal ultrasound: In transvaginal ultrasound the doctor inserts the ultrasound device 2-3 inches into the vaginal opening in order to ascertain the disorder. It is a painless procedure in which sound waves are used to produce an image of the required organ.
Hysterosonogram: Hysterosonogram is a minimally invasive and transvaginal procedure, it is also known as saline infusion sonogram. It is a procedure similar to ultrasound, but in this procedure the doctor also inserts a saline solution into the cavity of the uterus, this helps the doctor to see things which would not be possible with normal ultrasound.
There are no medical studies which suggest that a particular treatment is better than others. Treatment basically involves removal of the scar tissues and preventing them from growing again. Also, if the patient does not have any symptoms or the symptoms do not cause pain and obstruction in daily life there is no medical reason why treatment should be pursued.
The treatment involves two stages:
1.Adhesiolysis (removal of the adhesions/scar tissue): This is the first step in the treatment of Asherman’s disease; it is performed to remove the adhesions and is done using a hysteroscope. Adhesion removal can be difficult and must be done with care so that new scars are not created which will further exacerbate the condition.
2.Preventing adhesions from growing again after adhesiolysis: One of the main challenges with the treatment of Asherman’s syndrome is that even after the adhesion is removed, it frequently returns. Results of adhesiolysis or surgical removal of adhesions may be good if the adhesions are mild to moderate with a high incidence of return of regular menses but in cases of severe adhesions a patient may require several repeated attempts of hysteroscopic surgery. Therefore it is important to prevent the adhesions from growing again. The following techniques may be used for the same:
Provision of oral estrogen: The patients can be a given a course of estrogen in order to promote the growth of the normal uterine lining and to prevent the growth of the scar tissue again.
Placement of balloon or splint: The placement of a balloon shaped IUD (intrauterine device) to prevent the growth of adhesions again.