Intermediate
Technical
IVT
cervical funneling
Premature dilatation of the internal cervical os while the external os remains closed, creating a funnel-shaped appearance on ultrasound.
Full Definition
Cervical funneling refers to the premature opening of the internal cervical os while the external os remains closed, creating a characteristic funnel or V-shaped appearance on transvaginal ultrasound. This finding is associated with increased risk of preterm delivery and cervical insufficiency. The depth and width of the funnel are measured to assess severity, and findings may influence management decisions including cervical cerclage placement.
Usage
Usage note: Distinguish from overall cervical shortening, which is a different finding.
In Context
- "Transvaginal ultrasound revealed significant cervical funneling measuring 8mm in depth." — Ultrasound report
- "The presence of cervical funneling at 20 weeks prompted consideration of rescue cerclage." — Clinical consultation note
Also known as
cervical beaking
internal os dilatation
Don't confuse with
cervical shortening
cervical incompetence