Cervical incompetence

Case contributed by Bruno Di Muzio
Diagnosis certain


Premature labor pain, with some non-specific vaginal discharge. 26 weeks of gestation.

Patient Data

Age: 33 years
Gender: Female

Obstetric ultrasound


Markedly gaping internal os is seen with 'U-shaped' funnelling of gestation sac and bulging amniotic membranes. Near-total effacement of the cervix is seen.

Case Discussion

Cervical incompetence is a painless spontaneous dilatation of the cervix and is a common cause of second-trimester pregnancy failure.

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