Adenomyosis. definition. Adenomyosis is a benign disease of the uterus characterized by ectopic endometrial glands and stroma within the myometrium It is associated with myometrial hypertrophy and may be either diffuse or focal . . definition.
Adenomyosis is a benign disease of the uterus characterizedby ectopic endometrial glands and stroma within the myometrium
It is associated with myometrial hypertrophy andmay be either diffuse or focal.
adenomyomadescribes a focus of adenomyosis within a leiomyoma (fibroid). Both conditions are common so it is not surprising that this overlap condition may occur.
The gland tissue grows during the menstrual cycle and then at menses tries to slough, the old tissue and blood cannot escape
This trapping of the blood and tissue causes uterine pain in the form of monthly menstrual cramps.
It also produces abnormal uterine bleeding.
Over 23% of patients requiring hysterectomy for control of chronic severe pelvic pain had adenomyosis, and almost half of these women had had a tubal ligation performed. The possible relationship of adenomyosis to a previous tubal ligation has been explored.
No relationship was found between age at surgery, age at menarche, indications for surgery, menopausal status at intervention, and presence of adenomyosis.But parity may be associated with an increased frequency of adenomyosis.
Cyclic, cramping uterine pain beginning later in reproductive life (generally after age 35) and often associated with prolonged and heavy menses
In studies of chronic pelvic pain in which women had hysterectomies, the incidence of adenomyosis is about 15% to 25%
19 with adenomyosis with leiomyomas
39 with leiomyomas alone
2,616 consecutive hysterectomy specimens examined during a 7-year period.
The diagnosis can only be proven by the pathologists
A good gynecologist may suspect adenomyosis based on the clinical factors, but the final diagnosis usually has to wait until hysterectomy is performed.
repeated bimanual examinations, over several months, just before and after menstruation have been recommended to detect fluctuating changes in contour, size and consistency of the uterus
the presence of ill defined areas of contrast intravasation extending perpendicularly from the uterine cavity into the myometrium isThe most characteristic feature of adenomyosis on hysterography.
Unfortunately, the sensitivity of this technique is too low for clinical practice.
Filling of cavities in the uterine wall during hysterography was observedin 54 of 320 surgically excised specimens in which metal threads had beeninserted at different levels for identification.
Adenomyosis may haveaccounted for these cavities in 24%.
True adenomyomas (encapsulated) are uncommon tumors of the uterus. At hysterosalpingography, detection of a network of fine channels in a very well-circumscribed area of the myometrium, connected with the uterine cavity, allows a preoperative diagnosis
a larger study by Popp et al. who took not only needle biopsies immediately after hysterectomy but also at the time of laparoscopy as well as transvaginally under ultrasound guidance A single myometrial biopsy picked up only 8% to 19% of women with adenomyosis. The sensitivity of random needle biopsy is therefore too low for clinical practice.
adenomyosis is associated with increased numbers of myometrial macrophages, elevated antiphospolipid auto-antibodies and CA 125 levels in peripheral blood.
CA 125 antigens present on adenomyotic epithelial cells have a different molecular mass from those present on eutopic endometrium; the antibody binding site is however the same
If an antibody unique to adenomyosis could be isolated and purified then a highly specific serum screening test could be developed.
The technique is strongly operator dependent
ill defined hypoechoic areas
hetrogeneous myometrial echotexture
small anechioc lakes
asymetrical uterine enlargement
indistinct endometrial-myometrial border
subendometrial halo thickening
small echogenicislands on TVS
characterized by the presence of heterotopic endometrial glands and stroma in the myometrium
bright foci are seen On T2-weighted MR within the myometrium
correspondsto areas of decreased echogenicity on TVS
adjacent smooth muscle hyperplasia.
areas of decreased signal intensity at (MR
The ratio of heterotopic endometrialtissue to smooth muscle decreased echogenicity partly determines the imaging appearance
The subendometrial haloas a thin hypoechoic band (arrows).
The endometrium is uniformly echogenic
myometrium is thickened ventrally and has a heterogeneous echotexture
The echogenicity of the ventral myometrium is decreased relative to that of the dorsal myometrium
myometrial cyst (curved arrow).
excentric endometrial cavity
decreased uterine echogenicity without lobulations, contour abnormality, or mass effects,
Brosens and co-workers assessed ultrasonographic details such as:
Symmetry of myometrium
echogenicity of the myometrium
They found that The most predictive is theill-defined heterogeneous echotexture within the myometrium.
Reinhold et al. (1996)
Atzori et al. (1996)
Reinhold et al. (1995)
Brosens et al. (1995)
Asher et al. (1994)
Transvaginal ultrasonography is an effective, noninvasive, and relatively inexpensive procedure for the preoperative differential diagnosis of adenomyoma versus leiomyoma.
Transvaginal sonography is an effective procedure for the preoperative differentiation of adenomyoma from leiomyoma. If the status of the lesion's margins and the presence or absence of hypoechoic lacunae were selected for analysis, leiomyomas could be correctly diagnosed with transvaginal sonography in 95% of cases.
Magnetic resonance imaging was superior to TVS for the diagnosis of adenomyosis.
Magnetic resonance imaging had a higher specificity than TVS, but their sensitivities were in line.
20 women with clinically suspected adenomyosis underwent MR imaging and transvaginal Sonography Pathologic proof was obtained in all cases.
17 patients were proved to have adenomyosis.
Department of Gynecology and Obstetrics, Aarhus University and Aarhus University Hospital, Aarhus, Denmark
studied 106 consecutive premenopausal women who underwent hysterectomy for benign reasons.
Transvaginal ultrasonography and MRI were compared with histopathologic examination as the golden standard
22 (21%) patients had adenomyosis.
On T2-weighted MRI, focal adenomyosis are seen in areas of abnormal low signal intensity within the myometrium in approximately 50% of patients. These foci correspond to islands of heterotopic endometrial tissue, cystic dilatation of heterotopic glands, or hemorrhagic foci.
On T2-weighted MRI, diffuse adenomyosis usually manifestedas diffuse thickening of the junctional zone with homogeneouslow signal intensity .T2-weighted imaging providedsignificantly better lesion detection than unenhanced or contrastmaterial–enhanced T1-weighted imaging
Sagittal T1-weighted MR image shows a mildly enlarged anteverted uterus. The junctional zone is isointense relative to the myometrium.
Sagittal T2-weighted MR image shows diffuse, even thickening of the junctional zone (arrows), a finding consistent with diffuse adenomyosis
Extensive involvement of diffuse adenomyosis in a 42-year-old woman. Sagittal T2-weighted MR image demonstrates diffuse areas of low signal intensity involving most of the uterus (straight arrows) and punctate high-signal-intensity foci (arrowhead). A few small nabothian cysts (curved arrows) are seen in the uterine cervix.
The only definitive treatment for adenomyosis is total hysterectomy, with or without ovarian conservation.
(2) For ademyomata associated with infertility, GnRH-alpha therapy may avoid the risk of rupture of uterus which may occur after adenomyomectomy pregnancy.
(3) For infertility, GnRH-alpha treatment before laparoscopic surgery greatly decreases surgical difficulties and blood loss in certain cases.
The conservative surgery for adenomyoma can reduce symptom and raise pregnancy rate significantly, it can be accepted by young women who want to preserve their reproductive capacity.
Though the pregnancy rate of conservative surgery for diffused adenomyosis was low, it still has therapeutic value
UAE procedures were performed in 23 patients with adenomyosis. After treatment the symptoms and uterine volume of all patients were investigated.
UAE is an effective and safe method in the treatment of adenomyosis.
BUT the recurrence rate is not yet evaluated.