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Magnetic resonance imaging presentation of deep infiltrating endometriosis nodules before and after pregnancy: A case series

Abstract : OBJECTIVE: To compare the magnetic resonance imaging (MRI) features of deep infiltrating endometriosis (DIE) lesions before and after pregnancy. DESIGN: Retrospective study. SETTING: A single French university tertiary referral hospital. PATIENTS: Twenty-one women without a prior history of surgery for endometriosis with a radiological diagnosis by MRI with two sets of examinations performed before and after pregnancy. INTERVENTIONS: The volumes of the lesions were compared using the same protocol before and after pregnancy based on MRI (1.5 T) examinations by a single experienced radiologist who is a referring practitioner for image-based diagnosis of endometriosis. MAIN OUTCOME MEASURE(S): The DIE lesion volume. MEASUREMENTS AND MAIN RESULTS: Between October 2012 and December 2016, a total of 21 patients (67 lesions) were included and compared before and after pregnancy. The mean time interval between the MRI before pregnancy and delivery was 19.6 ± 8.5 months (median: 17.6, IQR 13.5-25.2 months). The mean time interval between delivery and the MRI after pregnancy was 11.0 ± 6.4 months (median: 8.3, IQR 6-15.2 months). The mean overall DIE lesion volume by MRI was significantly higher before pregnancy compared to after pregnancy (2,552 ± 3,315 mm3 vs. 1,708 ± 3,266 mm3, respectively, p < 0.01). The mean volume by MRI of the largest lesion of each patient was significantly higher before pregnancy compared to after pregnancy (4,728 ± 4,776 mm3 vs. 3165 ± 5299 mm3; p < 0.01). CONCLUSION: Our data indicate a favorable impact of pregnancy on DIE lesion volumes as measured by MRI.
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Submitted on : Monday, October 14, 2019 - 11:13:17 AM
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Anne Millischer, Louis Marcellin, Pietro Santulli, Chloé Maignien, Mathilde Bourdon, et al.. Magnetic resonance imaging presentation of deep infiltrating endometriosis nodules before and after pregnancy: A case series. PLoS ONE, Public Library of Science, 2019, 14 (10), pp.e0223330. ⟨10.1371/journal.pone.0223330⟩. ⟨inserm-02315060⟩

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