Accessory uterine appendage may be a new Müllerian malformation.

OBJECTIVE

To describe a case of an accessory uterine structure.

DESIGN

Case report.

SETTING

University affiliated, community-based hospital.

PATIENT(S): A 35-year-old woman who presented for laparoscopic tubal sterilization.

INTERVENTION(S): Laparoscopy, tubal sterilization, dye test, and excision of accessory uterine structure.

MAIN OUTCOME MEASURE(S): Laparoscopic findings and resection of the anomaly.

RESULT(S): Laparoscopy showed a hollow uterine appendage that communicated with the uterine cavity. This was completely excised.

CONCLUSION(S): We report a rare case of a uterine anomaly that is inconsistent with the traditional classification system, and we offer a possible mechanism for its formation.