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Obstetrics and gynaecology
Chronic interstitial ectopic pregnancy presenting with a negative urine pregnancy test
  1. Apiwat Jongjakapun,
  2. Lingling Salang,
  3. Apiwat Aueaungkul and
  4. Pilaiwan Kleebkaow
  1. Obstetrics and Gynaecology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
  1. Correspondence to Dr Lingling Salang; slingling{at}kku.ac.th

Abstract

The ampulla portion of the fallopian tube is the most common site of ectopic pregnancy (70%), with approximately 2% of pregnancies implanted in the interstitial portion. In general, an interstitial ectopic pregnancy (IEP) is difficult to diagnose and is associated with a high rate of complications—most patients with an IEP present with severe abdominal pain and haemorrhagic shock due to an ectopic rupture. Chronic tubal pregnancy (CTP) is an uncommon condition with an incidence of 20%. The CTP has a longer clinical course and a negative or low level of serum beta-human chorionic gonadotropin due to perished chorionic villi. This study presents a case of a woman who was diagnosed with a chronic IEP (CIEP) which was successfully treated by surgery. This case also acts as a cautionary reminder of considering a CIEP in women of reproductive age presenting with amenorrhea, vaginal bleeding and a negative pregnancy test.

  • Ectopic pregnancy
  • Pregnancy, Ectopic

https://doi.org/10.1136/bcr-2023-259267

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    Footnotes

    • Contributors The following authors were responsible for drafting of the text, sourcing and editing of clinical images, investigation results, drawing original diagrams and algorithms, and critical revision for important intellectual content: AJ, LS, AA, and PK. The following authors gave final approval of the manuscript: AJ and LS.

    • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

    • Case reports provide a valuable learning resource for the scientific community and can indicate areas of interest for future research. They should not be used in isolation to guide treatment choices or public health policy.

    • Competing interests None declared.

    • Provenance and peer review Not commissioned; externally peer reviewed.