Intramural Pregnancy Implanted Into a Myometrial Defect Caused by Curettage: Diagnosis With Transvaginal Sonography and Preconception and Postconception Magnetic Resonance Imaging

Intramural ectopic pregnancy: An individual patient data systematic review

Intramural pregnancies (IMP) are very rare and represent about 1% of ectopic pregnancies (EPs). Despite a few reported cases, there is limited awareness & knowledge among sonographers and physicians. Moreover, no established diagnostic or treatment protocol exists for such a condition. This study identifies and synthesizes what is known about IMP, including etiology and pathophysiology, common clinical presentations, imaging features, laparoscopic and hysteroscopic findings, and management. PUBMED and Google Scholar were queried to identify eligible studies. All articles on IMP in human subjects available in English and French languages were included. Other types of ectopic pregnancies, including cesarean scar and cervical ectopic pregnancies, were excluded. The Preferred Reporting Items for Systematic Reviews and Meta-analysis (PRISMA) guidelines and a narrative synthesis approach were used to systematically review the medical literature. 82 cases distributed around 27 countries with an average maternal age of 32.07 years and gestational age of 9.27 weeks were eventually selected for this study. History of curettage was the most common risk factor reported in 30 (36.58%) patients, followed by history of salpingectomy, assisted reproduction with embryo transfer, and previous cesarean delivery, in 10(12.19%), 10(12.19%), and 9(10.97%) patients respectively. Ultrasound was performed in 80(97.56%) cases. Of the 66 reported ultrasound findings, 29 were diagnostic or suggestive of IMP. MRI, laparoscopy (both diagnostic & surgical) and diagnostic hysteroscopy were carried out on 18(21.95%), 36(43.9%) and 22(26.83%) patients respectively. Histopathologic examination mainly performed after surgery was the gold standard for confirming the diagnosis. Management involved conservative (3.65%) approach, medical treatment with methotrexate or potassium chloride (23.17%), and surgical interventions. The latter includes laparoscopic surgery (25.61%), laparotomic surgery (23.17%), and hysterectomy (13.41%). IMP is a rare but potentially lethal clinical entity. A significant proportion of patients are asymptomatic and have no known risk factors. Correlation between clinical history and imaging findings is vital to establish a prompt diagnosis and reduce the risk of a catastrophic outcome.

Minimally-invasive management of intramural ectopic pregnancy: an eight-case series and literature review

OBJECTIVE

Intramural pregnancy (IMP) is a rare type of ectopic pregnancy and potentially fatal. Early diagnosis and management of IMP are important to preserve patient fertility. Here, we describe the use of minimally-invasive surgery for early IMP.

STUDY DESIGN

We retrospectively analyzed the clinical data of eight patients with IMP treated at our center (January 2010 to December 2018) and reviewed the literature describing minimally-invasive treatment of IMP.

RESULTS

All eight patients had at least one risk factor for IMP. Two cases were confirmed by ultrasound, but ectopic pregnancy or gestational trophoblastic disease were initially suspected in the other cases. Surgery (laparoscopic in three patients, hysteroscopic in one patient, and laparoscopic combined with hysteroscopic in four patients) was successful in all cases, and all patients recovered well without complications. The literature review identified 14 articles describing 17 cases of IMP managed with minimally-invasive surgery. Laparoscopic surgery was used successfully as a sole treatment in 10 cases and after failure of hysteroscopic surgery in six cases. Only one case was treated with a combination of hysteroscopic surgery and methotrexate. Interestingly, one case at our center presented with a sinus connecting the gestational sac and uterine cavity and was treated successfully using hysteroscopic surgery during early pregnancy.

CONCLUSIONS

Laparoscopic surgery is a feasible management option for most cases of early IMP. Hysteroscopic surgery may be appropriate for cases where a sinus connects the gestational sac with the uterine cavity or when cornual ectopic pregnancy needs to be excluded.

Intramyometrial pregnancy after cryopreserved embryo transfer: a case report

Background

Intramyometrial pregnancy is a rare subtype of ectopic pregnancy. The cases following IVF-ET were few reported in recent years. The etiological factors include previous uterine trauma like myomectomy, salpingectomy, dilatation and curettage, assisted reproductive technologies and adenomyosis. Early diagnosis is difficult to make due to its various manifestation. The medical treatment includes conservative management with surgical excision, aortic balloon occlusion, uterine artery embolization, MTX etc. Sometimes hysterectomy was performed due to delayed diagnosis.

Case presentation

In this article, we presented a case of a 28 years old woman who had cryopreserved embryo transfer with a history of right side salpingectomy. We suspected it a right adnexa ectopic pregnancy at the first place, especially the right fallopian interstitial or right uterus cornu due to ultrasonography and medical history. The product of conception was discovered embedded in the myometrium and protruding out from the right side of the posterior uterine wall, with seemingly no connection with uterine cavity nor fallopian tubes. The diagnosis of intramural pregnancy was made intraoperatively and validated after pathological report. The interventions were made early enough that exploratory laparoscopy, hysteroscopy and conservative surgical excision were successfully performed at 7 weeks’ gestation preserving the fertility.

Conclusions

It is important for clinicians to be aware of risk factors of intramural pregnancy and maintain an index of suspicion in ART treatment. Ultrasound and laparoscopy are essential managements for early diagnose which make conservative treatment possible and prevent life-threatening consequences.

Intramural ectopic pregnancy following pelvic adhesion: case report and literature review

BACKGROUND

Intramural pregnancy is an uncommon type of ectopic pregnancy, where the gestational sac is completely encircled by myometrium and unconnected with endometrial cavity, fallopian tubes or round ligament. Owing to its potentially life-threatening hemorrhage and uterine rupture, early diagnosis and management are urgently required. We present a case of a woman undergoing zigzag medical procedures, which featured non-consensus preoperative diagnosis of intramural and interstitial pregnancy and an intramural ectopic pregnancy ultimately confirmed and successfully removed by emergency laparoscopy. Additionally, we present a review of the related literature and discuss its varied clinical features, imageological characters, diagnosis, differential diagnosis and multiple treatments.

METHODS

A comprehensive bibliographic search through PubMed, using keywords: intramural ectopic pregnancy. Relevant literatures published from January 2013 to April 2019 were reviewed.

RESULTS

Twenty-four cases in total for intramural ectopic pregnancy including this report were reviewed. Diagnoses were mainly made by ultrasound images. Most patients had a history of uterine surgery or intrauterine operation and had been surgically resected. None of the mothers were in danger, but only one case had live birth at 37 weeks of gestation.

CONCLUSION

Non-specific clinical presentation and non-uniform ultrasound criteria pose a challenge for us to make timely and accurate management. Integrated radiological examinations and communication and cooperation between sonographers and gynecologists play a vital role in diagnostic accuracy and selecting the optimal therapeutic method of an intramural pregnancy.