Cogwheel sign
Last revised by Joshua Yap on 27 Jul 2022
Citation, DOI, disclosures and article data
Citation:
Weerakkody Y, Yap J, Bell D, et al. Cogwheel sign. Reference article, Radiopaedia.org (Accessed on 30 Jun 2024) https://doi.org/10.53347/rID-23365
rID:
23365
Article created:
9 Jun 2013,
Yuranga Weerakkody ◉
Disclosures:
At the time the article was created Yuranga Weerakkody had no recorded disclosures.
View Yuranga Weerakkody's current disclosures
Last revised:
Disclosures:
At the time the article was last revised Joshua Yap had no financial relationships to ineligible companies to disclose.
View Joshua Yap's current disclosures
Revisions:
6 times, by
5 contributors -
see full revision history and disclosures
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Synonyms:
- Cogwheel sign in pelvic ultrasound
- Cogwheel sign - pelvic ultrasound
- Cogwheel sign - hydrosalpinx
The cogwheel sign refers to the pelvic imaging appearance of dilated loops of fallopian tube seen in cross-section. It represents infolding projections (sometimes looking like nodules) into the fallopian tube lumen which are likened to that of a cogwheel. The sign is typically described on ultrasound and is suggestive of tubal inflammation in pelvic inflammatory disease with a pyosalpinx or a hydrosalpinx.
References
- 1. Bates J. Practical Gynaecological Ultrasound. Cambridge University Press. (2006) ISBN:0521674506. Read it at Google Books - Find it at Amazon
- 2. Rezvani M, Shaaban AM. Fallopian tube disease in the nonpregnant patient. Radiographics. 2011;31 (2): 527-48. Radiographics (full text) - doi:10.1148/rg.312105090 - Pubmed citation
- 3. Molander P, SjöBerg J, Paavonen J et-al. Transvaginal power Doppler findings in laparoscopically proven acute pelvic inflammatory disease. Ultrasound Obstet Gynecol. 2001;17 (3): 233-8. Ultrasound Obstet Gynecol (abstract) - doi:10.1046/j.1469-0705.2001.00353.x - Pubmed citation