PMC7315310_01
MR image performed at 7 weeks and 5 days in case 1 shows an interstitial pregnancy. A heterogeneously-enhanced hypervascular mass is identified on the right side of the uterine fundus. The mass measures 52 mm, which is larger than a GS at the corresponding estimated gestational age. Arrows indicate the pregnancy-associated lesion. (a) A sagittal T2-weighted MR image. (b) An axial T2-weighted MR image. (c) An enhanced axial MR image. (d) Gross pathology of the uterus and the pregnancy-related tissue. (e) An enlarged view of the implantation site.
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fig1
MRI was performed at 7 weeks and 5 days of pregnancy, and a heterogeneously enhanced hypervascular mass was identified on the right side of the uterine fundus (Figures 1(a)-1(c)). The macroscopic contents of the mass included a villous component, an embryo, and a blood clot (Figures 1(d) and 1(e)).
PMC7315310_02
Serial images before and after medical treatment in case 2, a cesarean scar pregnancy, are shown. Transition of the serum hCG beta level is shown by a graph of an exponential function. The lesion did not decrease in size and even increased despite a decrease in the serum hCG level. (a) TV-USG. (b) T2-weighted MR image. (c) T1-weighted MR image. (d) Enhanced MR image.
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fig2
Enhanced MRI showed a strongly enhanced hypervascular mass that was larger than that before the treatment (Figure 2).