Cervical incompetence morphological changes on ultrasound (mnemonic)

Last revised by Daniel J Bell on 15 Feb 2019

Sequential morphological ultrasound changes of the endocervical canal with cervical incompetence can be remembered using the mnemonic:

  • Trust Your Vaginal Ultrasound

Mnemonic

  • T-shaped (normal internal cervical os)
  • Y-shaped
  • V-shaped 
  • U-shaped

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