PMC6157094_01
A 23-year-old woman approached us with 11/2 months of amenorrhea and a positive urine pregnancy test. A transvaginal two-dimensional image showed the presence of intrauterine gestational sac in the right horn with yolk sac and a corpus luteum cyst in the ipsilateral ovary. A nonpregnant horn on the left side was observed. Nonpregnant horn shows the typical shape of the uterus with extreme lateral flexion.
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F1
A two-dimensional ultrasound (Voluson  E10, GE Healthcare, Austria GmbH and Co OG) with the endovaginal probe (GE-RIC5-9-D) disclosed an intrauterine sac with the presence of yolk sac and fetal pole with gestational age of 5 weeks [Figure 1].
Three-dimensional ultrasound in coronal view clearly demonstrates unicornuate uterus on the left side and presence of pregnancy in the right horn. Myometrium surrounding the gestational sac with no thinning and no communication between the two horns. There is no continuity between the cavities containing the gestational cavity with the cervical canal.
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F2
Beside the noncommunicating horn, a corpus luteum cyst in the right ovary was observed [Figure 2].
Laparoscopic picture showing left unicornuate uterus and an unruptured right rudimentary horn pregnancy with attached tube and ovary. Globular shape of the pregnant form can be made out with wide separation and no communication between the cavities.
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F3
A hystero-laparoscopy revealed normal peritoneal cavity with free fluid in the Pouch of Douglas (POD), a unicornuate uterus with a distended right rudimentary horn with the pregnancy, normal fallopian tubes, and a corpus luteum in the right ovary [Figure 3].