Endometrial polyp
ICD-10 N84.0 · ICD-11 GA16.Y

Asymptomatic Endometrial Polyp Under 10 mm With No Abnormal Uterine Bleeding

This protocol addresses the management of an endometrial polyp that is incidentally identified, causes no symptoms — specifically no abnormal uterine bleeding — and measures less than 10 mm.

Clinical Scenario

Conservative management is reasonable for small asymptomatic polyps. Evidence indicates that polyps under 10 mm are more likely to spontaneously regress than larger polyps, and asymptomatic polyps — including in postmenopausal patients — are unlikely to be malignant.

Approach Summary only

The structured protocol outlines a non-interventional strategy following shared discussion with the patient. The full decision framework — including follow-up criteria and escalation thresholds — is in the complete protocol.

The clinical target is spontaneous regression; approximately 25–27% of endometrial polyps regress during a 1-year follow-up, with smaller polyps showing higher regression rates.

Instant Access to Structured Evidence-Based Regimens

References

  1. Conservative management is reasonable, particularly for small polyps and if asymptomatic (Level A).
  2. There is Class II evidence that polyps may spontaneously regress in approximately 25% of cases, with smaller polyps more likely to regress compared with polyps >10 mm in length.
  3. Asymptomatic postmenopausal polyps are unlikely to be malignant and observation is an option after discussion with the patient.
  4. Given that most polyps are not malignant, there is an option for expectant management with no intervention.
  5. In one class II study, 27% of the endometrial polyps regressed spontaneously during a 1-year follow-up.

DOI: 10.1016/j.jmig.2011.09.003

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