Funnelling

Funnelling is the name for the dilation of the internal os during ultrasound cervicometry in gynecology. It is a sign of imminent premature birth.

Description of the finding (the T-Y-V-U sequence assigns a letter corresponding to the shape of the cervix during ultrasound examination):
 * T – normal finding (closed internal os)
 * Y – starting opening
 * V - continuous opening
 * U – open throat

Related articles

 * Birth