{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,21]],"date-time":"2026-09-21T08:30:37Z","timestamp":1789979437070,"version":"4.0.1"},"reference-count":15,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2019,3,25]],"date-time":"2019-03-25T00:00:00Z","timestamp":1553472000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Clinics and Practice"],"abstract":"<jats:p>At 22 days after intrauterine insemination with ovulation induction using clomiphene citrate at a previous hospital, a 30-year-old woman was admitted to our hospital owing to right lower quadrant abdominal pain. We diagnosed threatened abortion because of a gestational sac in the uterus on transvaginal ultrasonography. The next day, she complained of increased abdominal pain. Transvaginal ultrasonography revealed a gestational sac-like structure in the echo free space. She was diagnosed with heterotopic pregnancy due to a ruptured right tubal pregnancy, underwent laparoscopic right salpingectomy. Rupture of a gestational age of 5 weeks is extremely rare. If this was a case of a heterotopic pregnancy due to superfetation, it could be explained as this clinical course. When a pregnant woman develops abdominal pain, heterotopic pregnancies should not be excluded from the differential diagnosis, and the possibility of superfetation should be taken into consideration.<\/jats:p>","DOI":"10.4081\/cp.2019.1129","type":"journal-article","created":{"date-parts":[[2019,3,25]],"date-time":"2019-03-25T20:00:05Z","timestamp":1553544005000},"page":"1129","source":"Crossref","is-referenced-by-count":5,"title":["Heterotopic Pregnancy with Suspicion of Superfetation after the Intrauterine Insemination Cycle with Ovulation Induction Using Clomiphene Citrate: A Case 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