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The junction zone (JZ), or a small distinct hormone-dependent region at the endometrial-myometrial interface, may be assessed by three-dimensional transvaginal ultrasound (3D TVUS) and MRI. Features of adenomyosis are disruption, thickening, enlargement or invasion of the junctional zone. [ 21 ]
Anyway, the phenomenon of smooth muscle cell metaplasia occurring in association with endometriosis (endomyometriosis), as well as of smooth muscle differentiation at endometrio-myometrial junction independently from actually engendering uterus-like configurations in several locations of the pelvis, have been pointed out by several authors. [7] [8]
The myometrium is located between the endometrium (the inner layer of the uterine wall) and the serosa or perimetrium (the outer uterine layer).. The inner one-third of the myometrium (termed the junctional or sub-endometrial layer) appears to be derived from the Müllerian duct, while the outer, more predominant layer of the myometrium appears to originate from non-Müllerian tissue and is ...
Endometrial arteries are divided into the common ones and the arteriovenous anastomosis. The common ones are arteries that are homologous to the arteries of the rest of the body and they enrich the endometrium of the uterus. The joining of endometrial arteries and veins of the endometrium is known as arteriovenous. [1]
Symptoms depend on whether the cervical canal is partially or completely obstructed and on the patient's menopausal status. Pre-menopausal patients may have a build up of blood inside the uterus which may cause infection, sporadic bleeding, or pelvic pain.
Bandl's ring (also known as pathological retraction ring) is the abnormal junction between the two segments of the uterus; it is a late sign associated with obstructed labor. [1] Prior to the onset of labor, the junction between the lower and upper uterine segments is a slightly thickened ring.
The transformation of cells into endometrial tissue. Anatomical distortions and adhesions (the fibrous bands that form between tissues and organs following recovery from an injury) impair oocyte production and ovulation, decrease sperm motility, and lead to disordered myometrial contractions that can affect fertilization and embryo transport. [15]
It is well known that myomectomy surgery is associated with a higher risk of uterine rupture in later pregnancy. [8] Thus, women who have had myomectomy (with the exception of small submucosal myoma removal via hysteroscopy, or largely pedunculated myoma removal) should get Cesarean delivery to avoid the risk of uterine rupture that is commonly ...