Diagnostic Ultrasound - Abdomen and Pelvis

Unusual Ectopic Pregnancies
Diagnoses: Female Pelvis
(Left) Longitudinal
transabdominal ultrasound
shows an eccentrically located
GS , centered in the lower
anterior uterine wall, with
marked thinning of the
myometrium between the
bladder and the GS. (Right)
Longitudinal transvaginal
ultrasound in the same patient
shows a triangular shaped
defect ſt compatible with a
C-section scar, adjacent to the
EP in the lower anterior
uterine wall. Note separate
empty uterine cavity st.
(Left) Corresponding
longitudinal oblique color
Doppler US shows vascular
flow within the wall of the EP
ſt and in the fetal pole st.
(Right) Oblique transvaginal
M-mode ultrasound in the
same patient shows cardiac
activity in the live scar ectopic
pregnancy.
(Left) Sagittal T2 HASTE MR in
the same patient shows a T2-
bright structure with a
thick T2-hyperintense wall,
eccentrically located in the
lower anterior uterine wall.
Note the lack of intervening
myometrium st between the
sac & the bladder and the
normal cervical stroma ſt.
(Right) Longitudinal
transvaginal ultrasound
obtained after targeted
ultrasound-guided injection of
potassium chloride shows new
low-level internal echoes st in
sac. The yolk sac & fetal pole
were no longer seen.
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