Nonisthmic communicating uteri. Report of 3 new types in a new subclass of communicating uteri.

OBJECTIVE

To describe 3 new malformations and propose a new subclass of malformations, nonisthmic communicating uteri.

STUDY

DESIGN

Review of 17,511 hysterosalpingograms revealed 19 cases of communicating uteri. Three cases were identified that showed nonisthmic communications, previously unreported.

RESULTS

The 3 new types of communicating uteri were (1) bicornuate uterus with 2 sites of communication, midcervical and isthmic; (2) septate uterus with a midcorporeal communication; and (3) bicornuate uterus with a low cervical communication and atretic hemicervix.

CONCLUSION

The 3 new types of nonisthmic communicating uteri constitute a new subclass of communicating uteri. We are aware of only 1 other reported type of nonisthmic communicating uteri. Nonisthmic communications may arise from a different mechanism than isthmic communications.