Where histology used the presence of glands and/or stroma in the myometrium as pathognomonic for adenomyosis, imaging uses the appearance of the myometrium, the presence of striations, related to the ...presence of endometrial tissue within the myometrium, the presence of intramyometrial cystic structures and the size and asymmetry of the uterus to identify adenomyosis. Preliminary reports show a good correlation between the features detected by imaging and the histological findings. Symptoms associated with adenomyosis are abnormal uterine bleeding, pelvic pain (dysmenorrhea, chronic pelvic pain, dyspareunia), and impaired reproduction. However a high incidence of existing comorbidity like fibroids and endometriosis makes it difficult to attribute a specific pathognomonic symptom to adenomyosis. Heterogeneity in the reported pregnancy rates after assisted reproduction is due to the use of different ovarian stimulation protocols and absence of a correct description of the adenomyotic pathology. Current efforts to classify the disease contributed a lot in elucidated the potential characteristics that a classification system should be relied on. The need for a comprehensive, user friendly, and clear categorization of adenomyosis including the pattern, location, histological variants, and the myometrial zone seems to be an urgent need. With the uterus as a possible unifying link between adenomyosis and endometriosis, exploration of the uterus should not only be restricted to the hysteroscopic exploration of the uterine cavity but in a fusion with ultrasound.
Like endometriosis, uterine adenomyosis is another enigmatic disease and remains a source of controversy. Uterine adenomyosis is characterized by the presence of endometrial glands in the myometrium. ...Two main theories may explain its pathogenesis: adenomyosis may arise from invagination of the myometrial basalis into the myometrium; or an alternative theory maintains that it may result from metaplasia of displaced embryonic pluripotent müllerian remants or differentiation of adult stem cells. Uterine adenomyosis is responsible for pelvic pain, abnormal bleeding, and infertility. Its diagnosis may be improved by high quality imaging. This issue's Views and Reviews, authors stress the urgent need to establish some systematic classification. Medical and surgical strategies are discussed. It should be emphasized that treatment should be designed according to a patient's symptoms and an individual's needs. Surgical treatment remains a matter of debate. Indeed, the risk of uterine rupture during pregnancy after adenomyomectomy is a reality. Therefore, continued research into new molecules based on the pathogenic mechanisms is vital.
To correlate the type and degree of adenomyosis, scored through a new system based on the features of transvaginal sonography, to patients' symptoms and fertility.
This is a multicenter, ...observational, prospective study.
Two endometriosis tertiary referral centers (University of Rome "Tor Vergata" and University of Siena).
A total of 108 patients with ultrasonographic signs of adenomyosis.
A new ultrasonographic scoring system designed to assess the severity and the extent of uterine adenomyosis was used to stage the disease in correlation with the clinical symptoms. Menstrual uterine bleeding was assessed by a pictorial blood loss analysis chart, painful symptoms were evaluated using a visual analog scale, and infertility factors were considered.
A total of 108 patients with ultrasonographic signs of adenomyosis (mean age ± standard deviation, 37.7 ± 7.7 years) were classified according to the proposed scoring system. Women with ultrasound diagnosis of diffuse adenomyosis were older (p = .04) and had heavier menstrual bleeding (p = .04) than women with focal disease; however, no statistically significant differences were found regarding the presence and severity of dyspareunia and dysmenorrhea. Higher values of menstrual bleeding were found for severe diffuse adenomyosis, with the highest values being found in those with adenomyomas. In patients trying to conceive, the presence of ultrasound findings of focal disease was associated with a higher percentage of infertility than in those with diffuse disease, and the focal involvement of the junctional zone showed a higher percentage of at least 1 miscarriage than in those with diffuse adenomyosis.
The ultrasonographic evaluation of the type and extension of adenomyosis in the myometrium seems to be important in correlation to the severity of symptoms and infertility.
Abstract
STUDY QUESTION
What is the relationship between endometriosis phenotypes superficial peritoneal endometriosis (SUP), ovarian endometrioma (OMA), deep infiltrating endometriosis (DIE) and the ...adenomyosis appearance by magnetic resonance imaging (MRI)?
SUMMARY ANSWER
Focal adenomyosis located in the outer myometrium (FAOM) was observed more frequently in women with endometriosis, and was significantly associated with the DIE phenotype.
WHAT IS KNOWN ALREADY
An association between endometriosis and adenomyosis has been reported previously, although data regarding the association between MRI appearance of adenomyosis and the endometriosis phenotype are currently still lacking.
STUDY DESIGN, SIZE, DURATION
This was an observational, cross-sectional study using data prospectively collected from non-pregnant patients who were between 18 and 42 years of age, and who underwent surgery for symptomatic benign gynecological conditions between January 2011 and December 2014. For each patient, a standardized questionnaire was completed during a face-to-face interview conducted by the surgeon during the month preceding the surgery. Only women with preoperative standardized uterine MRIs were retained for this study.
PARTICIPANTS/MATERIALS, SETTING, METHODS
Surgery was performed on 292 patients with signed consent and available preoperative MRIs. After a thorough surgical examination of the abdomino-pelvic cavity, 237 women with histologically proven endometriosis were allocated to the endometriosis group and 55 symptomatic women without evidence of endometriosis to the endometriosis free group. The existence of diffuse or FAOM was studied in both groups and according to surgical endometriosis phenotypes (SUP, OMA and DIE).
MAIN RESULTS AND THE ROLE OF CHANCE
Adenomyosis was observed in 59.9% (n = 175) of the total sample population (n = 292). Based on MRI, the distribution of adenomyosis was as follows: isolated diffuse adenomyosis (53 patients; 18.2%), isolated FAOM (74 patients; 25.3%), associated diffuse and FAOM (48 patients; 16.4%). Diffuse adenomyosis (isolated and associated to FAOM) was observed in one-third of the patients regardless of whether they were endometriotic patients or endometriosis free women taken as controls (34.2% (81 cases) versus 36.4% (20 cases)); P = 0.764. Among endometriotic women, diffuse adenomyosis (isolated and associated to FAOM) failed to reach significant correlation with the endometriosis phenotypes (SUP, 20.0% (8 cases); OMA, 45.2% (14 cases) and DIE, 35.5% (59 cases); P = 0.068). In striking contrast, there was a significant increase in the frequency of FAOM in endometriosis-affected women than in controls (119 cases (50.2%) versus 5.4% (3 cases); P < 0.001). FAOM correlated with the endometriosis phenotypes, significantly with DIE (SUP, 7.5% (3 cases); OMA, 19.3% (6 cases) and DIE, 66.3% (110 cases); P < 0.001).
LIMITATIONS, REASONS FOR CAUTION
There was a possible selection bias due to the specificity of the study design, as it only included surgical patients in a referral center that specializes in endometriosis surgery. Therefore, women referred to our center may have suffered from particularly severe forms of endometriosis. This could explain the high number of women with DIE (166/237–70%) in our study group. This referral bias for women with severe lesions may have amplified the difference in association of FAOM with the endometriosis-affected patients compared to women without endometriosis. Furthermore, according to inclusion criteria, women in the endometriosis free group were symptomatic women. This may introduce some bias as symptomatic women may be more prone to have associated adenomyosis that in turn could have been overrepresented in the endometriosis free group. Whether this selection could have introduced a bias in the relationship between endometriosis and adenomyosis remains unknown.
WIDER IMPLICATIONS OF THE FINDINGS
This study opens the door to future epidemiological, clinical and mechanistic studies aimed at better characterizing diffuse and focal adenomyosis. Further studies are necessary to adequately determine if diffuse and focal adenomyosis are two separate entities that differ in terms of pathogenesis.
STUDY FUNDING/COMPETING INTEREST(S)
No funding supported this study. The authors have no conflict of interest to declare.
To evaluate and compare the clinical efficacy of transabdominal ultrasound-guided percutaneous microwave ablation (PMWA) in the treatment of symptomatic focal and nonfocal adenomyosis.
Retrospective ...cohort study.
Longyan First Affiliated Hospital of Fujian Medical University.
From May 2019 to October 2021, 107 patients with symptomatic adenomyosis who refused hysterectomy received PMWA.
Patients were divided into a focal group (n = 47, including 40 focal adenomyosis and 7 adenomyoma cases) and a nonfocal group (n = 60, including 36 diffuse and 24 mixed adenomyosis cases) according to the extent of lesion involvement.
We collected and analyzed preoperative baseline data on patient characteristics; postoperative efficacy measures at 3, 6, and 12 months; and intraoperative and postoperative complications. There was a significant post-treatment reduction in the uterine corpus volume and cancer antigen 125 levels, an increase in hemoglobin levels, and an improvement in the Uterine Fibroid Symptom and Health-related Quality of Life scores (consisting of the Symptom Severity Scale and the Health-related Quality of Life scale), dysmenorrhea visual analog scale, and menstrual volume score (MVS) (all p <.05). One patient had recurrence. Most adverse events (72.0%) were mild. Although the nonfocal group had significantly greater anemia severity, higher Symptom Severity Scale and MVS, lower Health-related Quality of Life scale, greater extent and severity of myometrial involvement, and larger uterine corpus volume, after treatment, the uterine corpus volume, uterine corpus reduction rate, cancer antigen 125 levels, hemoglobin levels, Uterine Fibroid Symptom and Health-related Quality of Life score, dysmenorrhea visual analog scale, MVS score, and clinical response rate were similar between the groups (p >.05).
PMWA had good, similar, short-term efficacy for symptomatic focal and nonfocal adenomyosis.
The appropriate surgical treatment of adenomyosis, a benign invasion/infiltration of endometrial glands within the underlying myometrium, remains a subject of discussion. Since 1990, in place of the ...classical V-shaped resection method, various kinds of surgical management have been attempted, including a uterine muscle flap method that emphasizes fertility preservation, an asymmetric dissection method, and various modified reduction methods. Laparoscopic adenomyomectomy has also become an alternative to laparotomy for surgically managing the focal type of adenomyosis, although it seems to be associated with a higher risk of uterine rupture than laparotomy. This article reviews the surgical treatment of adenomyosis, including 23 uterine rupture cases that occurred during post-adenomyomectomy pregnancies, and provides an updated picture of the state of the field.
Adenomyosis is a benign uterine condition affecting women at various ages with different symptoms. The management of these patients is still controversial. Few clinical studies focusing on medical or ...surgical treatment for adenomyosis have been performed. No drug is currently labelled for adenomyosis and there are no specific guidelines to follow for the best management. Anyhow, medical treatments are effective in improving symptoms (pain, abnormal uterine bleeding and infertility). The rationale for using medical treatment is based on the pathogenetic mechanisms of adenomyosis: sex steroid hormones aberrations, impaired apoptosis, and increased inflammation. Several nonhormonal (i.e., nonsteroidal anti-inflammatory drugs) and hormonal treatments (i.e., progestins, oral contraceptives, gonadotropin-releasing hormone analogues) are currently used off-label to control pain symptoms and abnormal uterine bleeding in adenomyosis. Gonadotropin-releasing hormone analogues are indicated before fertility treatments to improve the chances of pregnancy in infertile women with adenomyosis. An antiproliferative and anti-inflammatory effect of progestins, such as dienogest, danazol and norethindrone acetate, suggests their use in medical management of adenomyosis mainly to control pain symptoms. On the other hand, the intrauterine device releasing levonorgestrel resulted is extremely effective in resolving abnormal uterine bleeding and reducing uterine volume in a long-term management plan. Based on new findings on pathogenetic mechanisms, new drugs are under development for the treatment of adenomyosis, such as selective progesterone receptor modulators, aromatase inhibitors, valproic acid, and anti-platelets therapy.
We performed a comprehensive narrative synthesis of systematic reviews with meta-analysis published in the last 5 years on the association of endometriosis and adenomyosis with reproductive and ...obstetric outcomes. This review aimed to define the information on which to base preconceptional counseling and clarify whether and in which cases pregnant women with endometriosis and adenomyosis should be referred to tertiary care centers and followed as high-risk obstetric patients. Reduced pregnancy and live birth rates and an increased miscarriage rate were observed in women with endometriosis and adenomyosis. The effect was larger in women with adenomyosis than in those with endometriosis. Women with superficial peritoneal and ovarian endometriosis do not appear to be at considerably increased risk of major obstetric and neonatal complications, whereas women with severe endometriosis, whether operated or not, are at several-fold increased risk of placenta previa. Moreover, deep infiltrating endometriosis is a risk factor for spontaneous hemoperitoneum in pregnancy and is associated with surgical complications at cesarean section. Overall, women with adenomyosis are at increased risk of various adverse obstetric outcomes, including preeclampsia, preterm delivery, fetal malpresentation, postpartum hemorrhage, low birth weight, and small for gestational age. Most studies included in the considered systematic reviews are characterized by substantial qualitative and quantitative heterogeneity. This makes a reliable assessment of the available evidence difficult, and caution should be exercised when attempting to derive clinical indications. Nevertheless, women with deep infiltrating endometriosis and severe adenomyosis should be considered at high obstetric risk and can benefit from referral to tertiary care centers where they can be safely followed through pregnancy and delivery. Whether the same should apply also to pregnant women with minimal endometriosis and adenomyosis forms is currently uncertain. Emerging evidence suggests that some adverse reproductive and obstetric outcomes observed in women with endometriosis are, in fact, associated with coexisting adenomyosis.
Abstract
STUDY QUESTION
Do adenomyosis phenotypes such as external or internal adenomyosis, as diagnosed by MRI, have the same clinical characteristics?
SUMMARY ANSWER
External adenomyosis was found ...more often in young and nulliparous women and was associated with deep infiltrating endometriosis, whereas, in contrast, internal adenomyosis was more often associated with heavy menstrual bleeding (HMB) but no differences were noted in terms of pain symptoms.
WHAT IS KNOWN ALREADY
Adenomyosis is characterized by the presence of endometrial glands and stroma deep within the myometrium, giving rise to dysmenorrhea, pelvic pain and menorrhagia. Various forms have been described, including adenomyosis of the outer myometrium (external adenomyosis), which corresponds to lesions separated from the junctional zone (JZ), and adenomyosis of the inner myometrium (internal adenomyosis), which is mostly characterized by endometrial implants scattered throughout the myometrium and enlargement of the JZ. Although the pathogenesis of adenomyosis is not clearly understood, several lines of evidence suggest that these two phenotypes could have distinct origins. The clinical presentation of different forms of adenomyosis in patients warrants further investigation.
STUDY DESIGN, SIZE, DURATION
This was an observational study that used data collected prospectively in non-pregnant patients aged between 18 and 42 years who had undergone surgical exploration for benign gynecological conditions at our institution between May 2005 and May 2018. Only women with a pelvic MRI performed by a senior radiologist during the preoperative work-up were retained for this study. For each patient, a standardized questionnaire was completed during a face-to-face interview conducted by the surgeon in the month preceding the surgery. The women’s histories (notably their age, gravidity, history of surgery and associated endometriosis), as well as clinical symptoms such as the pain intensity, presence of menorrhagia and infertility, were noted.
PARTICIPANTS/MATERIALS, SETTING, METHODS
A pelvic MRI was performed in 496 women operated at our center for a benign gynecological disease who had provided signed informed consent. Of these, 248 women had a radiological diagnosis of adenomyosis. Based on the MRI findings, the women were diagnosed as having external and/or internal adenomyosis. The women were allocated to two groups according to the adenomyosis phenotype (only external adenomyosis vs only internal adenomyosis). Women exhibiting an association of both adenomyosis forms were analyzed separately.
MAIN RESULTS AND THE ROLE OF CHANCE
In all, following the MRI findings, 109 women (44.0%) exhibited only external adenomyosis, while 78 (31.5%) had only internal adenomyosis. The women with external adenomyosis were significantly younger (mean ± SD; 31.9 ± 4.6 vs 33.8 ± 5.2 years; P = 0.006), more often nulligravid (P ≤ 0.001) and more likely to exhibit an associated endometriosis (P < 0.001) compared to the women in the internal adenomyosis group. Moreover, the women exhibiting internal adenomyosis significantly more often had a history of previous uterine surgery (P = 0.002) and HMB (62 (80%) vs 58 (53.2%), P < 0.001) compared to the women with external adenomyosis. No differences in the pain scores (i.e. dysmenorrhea, non-cyclic pelvic pain and dyspareunia) were observed between the two groups.
LIMITATIONS, REASONS FOR CAUTION
The exclusive inclusion of surgical patients could constitute a possible selection bias, as the women referred to our center may have suffered from particularly severe clinical symptoms.
WIDER IMPLICATIONS OF THE FINDINGS
Further studies are needed to explore the pathogenesis by which these types of adenomyosis occur. This could help with the development of new treatment strategies specific for each entity.
STUDY FUNDING/COMPETING INTEREST(S)
none.
TRIAL REGISTRATION NUMBER
N/A.
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