A 31-year-old pregnant woman, gravida 2, para 1, with a normal first pregnancy, came to the obstetric clinic for a routine checkup at 32 weeks' gestation. Physical examination disclosed a uterus inappropriately small for the length of pregnancy and an unusual transverse presentation of the fetus. The pregnancy had been unremarkable except for an emergency room visit at ten to 12 weeks for unexplained mild right lower quadrant pain, which subsided spontaneously in three to five days.Ultrasound examination was performed the following day. Figure 1 represents a long-axis midline ultrasound scan of the pelvis; and Fig 2, a transverse oblique ultrasound scan through the fetal head, along the dotted line of Fig 1. In both figures, FH indicates fetal head; FB, fetal body; P, placenta; and BL, maternal urinary bladder; (H) is toward the patient's head and (R) is toward the patient's right side.
Kurtz AB, Dubbins PA, Wapner RJ, Goldberg BB. Problem of Abnormal Fetal Position. JAMA. 1982;247(23):3251–3252. doi:10.1001/jama.1982.03320480065030
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