Intra-abdominal hemorrhage due to previously unknown endometriosis in the third trimester of pregnancy with uneventful neonatal outcome: A case report

Spontaneous hemoperitoneum in pregnancy: a life-threatening maternal and fetal complication of endometriosis

BACKGROUND

Spontaneous hemoperitoneum in pregnancy (SHiP) is a complication of endometriosis. We describe the clinical characteristics and outcomes of mother and fetus in 11 new cases of SHiP with endometriosis and 43 cases reported in the literature since 1995.

MATERIAL AND METHODS

The 60 maternity hospitals in the Auvergne-Rhône-Alpes region in France were contacted to identify cases of SHiP associated with endometriosis. . In parallel, a systematic review of the literature used the PRISMA chart to report published cases.

RESULTS

Fifty-four cases of SHIP associated with endometriosis are presented. Twenty-four patients (44%) conceived with assisted reproductive techniques. Hemoperitoneum occurred before delivery in 47/54 cases (87%).The average gestational age of occurrence was 27 weeks (13 weeks to 40+6 weeks). An hypovolemic shock was present in 24/51 (47%) of patients. Forty-six women (85%) were treated by laparotomy, 5 (9%) by laparoscopy, 2 (2%) by interventional radiology. The hemorrhage site was in the mediolateral compartment of the pelvis in 29 cases (54%), corresponding to bleeding from vessels in the broad ligament in 24/29 (83%) of these cases. The mean estimated blood loss was 1957 mL (150-7500 mL). Emergency peripartum hysterectomy was required in 3/54 cases (6%). There were no maternal deaths. The average gestational age at birth was 30 weeks (13+2 weeks to 42 weeks). The fetus died in 19/64 cases (30%).

CONCLUSION

SHiP is an underestimated potentially fatal complication of endometriosis. Maternal salvage by emergency laparotomy is usually required to identify and treat the bleeding site. Fetal prognosis remains poor.

Obstetrical complications of endometriosis, particularly deep endometriosis

Over the past few years, a new topic in the field of endometriosis has emerged: the potential impact of the disease on pregnancy outcomes. This review aims to summarize in detail the available evidence on the relationship between endometriosis, particularly deep endometriosis (DE), and obstetrical outcomes. Acute complications of DE, such as spontaneous hemoperitoneum, bowel perforation, and uterine rupture, may occur during pregnancy. Although these events represent life-threatening conditions, they are rare and unpredictable. Therefore, the current literature does not support any kind of prophylactic surgery before pregnancy to prevent such complications. Results on the impact of DE on obstetrical outcomes are debatable and characterized by several limitations, including small sample size, lack of adjustment for confounders, lack of adequate control subjects, and other methodologic flaws. For these reasons, it is not possible to draw conclusions on this topic. The strongest evidence shows that DE is associated with higher rates of placenta previa; for other obstetrical outcomes, such as miscarriage, intrauterine growth restriction, preterm birth and hypertensive disorders, results are controversial. Although it is unlikely that surgery of DE may modify the impact of the disease on the course of pregnancy, no study has yet investigated this issue.

A systematic review on endometriosis during pregnancy: diagnosis, misdiagnosis, complications and outcomes

BACKGROUND

Traditionally, pregnancy was considered to have a positive effect on endometriosis and its painful symptoms due not only to blockage of ovulation preventing bleeding of endometriotic tissue but also to different metabolic, hormonal, immune and angiogenesis changes related to pregnancy. However, a growing literature is emerging on the role of endometriosis in affecting the development of pregnancy and its outcomes and also on the impact of pregnancy on endometriosis. The present article aims to underline the difficulty in diagnosing endometriotic lesions during pregnancy and discuss the options for the treatment of decidualized endometriosis in relation to imaging and symptomatology; to describe all the possible acute complications of pregnancy caused by pre-existing endometriosis and evaluate potential treatments of these complications; to assess whether endometriosis affects pregnancy outcome and hypothesize mechanisms to explain the underlying relationships.

METHODS

This systematic review is based on material searched and obtained via Pubmed and Medline between January 1950 and March 2015. Peer-reviewed, English-language journal articles examining the impact of endometriosis on pregnancy and vice versa were included in this article.

RESULTS

Changes of the endometriotic lesions may occur during pregnancy caused by the modifications of the hormonal milieu, posing a clinical dilemma due to their atypical appearance. The management of these events is actually challenging as only few cases have been described and the review of available literature evidenced a lack of formal estimates of their incidence. Acute complications of endometriosis during pregnancy, such as spontaneous hemoperitoneum, bowel and ovarian complications, represent rare but life-threatening conditions that require, in most of the cases, surgical operations to be managed. Due to the unpredictability of these complications, no specific recommendation for additional interventions to the routinely monitoring of pregnancy of women with known history of endometriosis is advisable. Even if the results of the published studies are controversial, some evidence is suggestive of an association of endometriosis with spontaneous miscarriage, preterm birth and small for gestational age babies. A correlation of endometriosis with placenta previa (odds ratio from 1.67 to 15.1 according to various studies) has been demonstrated, possibly linked to the abnormal frequency and amplitude of uterine contractions observed in women affected. Finally, there is no evidence that prophylactic surgery would prevent the negative impact of endometriosis itself on pregnancy outcome.

CONCLUSIONS

Complications of endometriosis during pregnancy are rare and there is no evidence that the disease has a major detrimental effect on pregnancy outcome. Therefore, pregnant women with endometriosis can be reassured on the course of their pregnancies although the physicians should be aware of the potential increased risk of placenta previa. Current evidence does not support any modification of conventional monitoring of pregnancy in patients with endometriosis.