A Comparison between Cases of Ovarian and Tubal Pregnancies

Haruka Nunomura, Yuuki Yamazaki, Michiyo Ushijima, Kiyoshi Kato, Hiroki Waki, Yoshihiro Yamakawa
In: JAPANESE JOURNAL OF GYNECOLOGIC AND OBSTETRIC ENDOSCOPY · 2020 · vol. 36(1) , pp. 70–74 · doi:10.5180/jsgoe.36.1_70 · W3033077901
article OA: diamond CC0
🔓 Open OA copy Full text JSON View on OpenAlex View at publisher
⚙ AI-generated summary by gemini-2.5-flash-lite, 2026-06-08 ⓘ

This study compared three ovarian pregnancies to 57 tubal pregnancies, finding ovarian cases had significantly higher blood loss and were diagnosed intraoperatively, often presenting with hemoperitoneum but rarely vaginal bleeding.

One-sentence paraphrase of the abstract; not a substitute for reading it. No clinical advice. How this works

⚙ AI-generated deep summary by claude@2026-06, 2026-06-24 · read from full text ⓘ

This retrospective study compared three spontaneously occurring ovarian pregnancy cases treated at a single department between 2008 and 2018 with 57 tubal pregnancy cases over the same period. Across all ovarian and tubal pregnancies, women presented lower abdominal pain, hemoperitoneum was found on transvaginal ultrasound in all ovarian cases, and laparoscopy identified ruptured ovarian pregnancy confirmed by postoperative pathology. Vaginal bleeding was reported in only one ovarian case versus 70% of tubal cases, and median estimated blood loss was higher in ovarian pregnancy than in tubal pregnancy (330 mL vs. 80 mL). A key limitation is the very small ovarian pregnancy sample size, and it also notes that no endometriosis lesions or adhesions were observed. The paper does not explicitly discuss endometriosis or adenomyosis; it was included in the corpus via a keyword match in the upstream search index.

Read from the paper's body, not the abstract. Not a substitute for reading the paper. No clinical advice. How this works

Abstract

Ovarian pregnancy is a rare occurrence and accounts for 0.3% to 3.0% of all ectopic pregnancies. We report three cases of ovarian pregnancy diagnosed in our department. Three women treated for ovarian pregnancy from 2008 to 2018 were retrospectively identified and compared to 57 women who underwent tubal pregnancies during the same period. All cases were of spontaneous pregnancy and presented lower abdominal pain of varying intensity. Vaginal bleeding was observed in only one case among the three ovarian pregnancy cases but was detected in 70% of the tubal pregnancy cases. Transvaginal sonogram demonstrated hemoperitoneum in all three cases. These women underwent laparoscopic surgery and ruptured ovarian pregnancy was identified in all cases. There was no lesion of endometriosis or adhesion. The median estimated blood loss was significantly higher in women undergoing ovarian pregnancy than in those undergoing tubal pregnancy (330 mL vs. 80 mL, p=0.03). All three cases of ovarian pregnancy were diagnosed intraoperatively and the diagnosis was confirmed based on postoperative pathological findings. Wedge resection or enucleation was performed to remove ovarian pregnancy with laparoscopic surgery. Two of the three cases used bipolar devices and were closed with absorbable sutures to ensure hemostasis of the ovary. Laparoscopic surgery for ectopic pregnancy may be a basic procedure, but it sometimes requires suturing in a body cavity; the preoperative diagnosis of unusual ectopic pregnancy remains particularly difficult. We should keep in mind the possibility of unusual ectopic pregnancies in case of unclear implantation sites and perform early diagnostic laparoscopy to reduce the risk of complications such as rupturing, hemorrhagic shock, and maternal mortality.
Full text 1,878 characters · extracted from oa-doi-fallback · click to expand
原著論文 当院において過去9年間に経験した卵巣妊娠3例（卵管妊娠との比較） 2020 年 36 巻 1 号 p. 70-74 詳細 抄録 Ovarian pregnancy is a rare occurrence and accounts for 0.3% to 3.0% of all ectopic pregnancies. We report three cases of ovarian pregnancy diagnosed in our department. Three women treated for ovarian pregnancy from 2008 to 2018 were retrospectively identified and compared to 57 women who underwent tubal pregnancies during the same period. All cases were of spontaneous pregnancy and presented lower abdominal pain of varying intensity. Vaginal bleeding was observed in only one case among the three ovarian pregnancy cases but was detected in 70% of the tubal pregnancy cases. Transvaginal sonogram demonstrated hemoperitoneum in all three cases. These women underwent laparoscopic surgery and ruptured ovarian pregnancy was identified in all cases. There was no lesion of endometriosis or adhesion. The median estimated blood loss was significantly higher in women undergoing ovarian pregnancy than in those undergoing tubal pregnancy (330 mL vs. 80 mL, p=0.03). All three cases of ovarian pregnancy were diagnosed intraoperatively and the diagnosis was confirmed based on postoperative pathological findings. Wedge resection or enucleation was performed to remove ovarian pregnancy with laparoscopic surgery. Two of the three cases used bipolar devices and were closed with absorbable sutures to ensure hemostasis of the ovary. Laparoscopic surgery for ectopic pregnancy may be a basic procedure, but it sometimes requires suturing in a body cavity; the preoperative diagnosis of unusual ectopic pregnancy remains particularly difficult. We should keep in mind the possibility of unusual ectopic pregnancies in case of unclear implantation sites and perform early diagnostic laparoscopy to reduce the risk of complications such as rupturing, hemorrhagic shock, and maternal mortality. © 2020 日本産科婦人科内視鏡学会

Text is read by the "Ask this paper" AI Q&A widget below. Extraction quality varies by source — PMC NXML preserves structure cleanly, OA-HTML may include some navigation residue, and OA-PDF can have broken hyphenation. The publisher copy (via DOI) is the canonical version.

My notes (saved in your browser only)

⚙ Ask this paper AI returns verbatim quotes from the full text · source: oa-doi-fallback ⓘ

Answers must be backed by verbatim quotes from this paper's full text. Hallucinated quotes are dropped automatically; if no verbatim passage answers the question, we say so. How this works

Condition tags

endometriosis

Citation neighborhood (no data yet)

We don't have any in-corpus citations linked to this paper yet. The paper's references may be in our DB but unresolved to ``paper_id`` (resolution happens at ingest when the cited DOI matches a row we already have). Run the cross-source citation reconcile pass to retry.

References (7)

Source provenance

openalex
last seen: 2026-06-04T00:00:01.174412+00:00
License: CC0 · commercial use OK