Abstract
Background
: Thermal balloon endometrial ablation is a relatively safe nonsurgical treatment for menorrhagia. Hematometra follows this procedure in <3% of patients, but risk factors for this complication are unclear.
Case
: A woman with a history of cervical incompetence during pregnancy later developed cervical occlusion and hematometra after thermal balloon endometrial ablation. Cervical occlusion did not recur after cervical dilatation and temporary placement of a catheter as a stent.
Conclusion
: The normal resistance of the internal cervical os may be an important factor in avoiding thermal damage to the cervix during thermal balloon endometrial ablation. This case suggests that a history of cervical incompetence may be a clinical indicator of decreased cervical resistance.
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