Abstract
Purpose
To determine the prevalence of a longitudinal “pseudoseptum” on T2‐weighted MR images within the cervices of women who do not have a uterine anomaly.
Materials and Methods
We reviewed 317 consecutive female pelvic MR examinations performed at a single institution over a four‐month period. All examinations included T2‐weighted sequences in at least two orthogonal planes. Of the 317 studies, 57 were excluded due to prior radical hysterectomy. Axial and coronal T2‐weighted images of the remaining 260 examinations were evaluated for the presence of a longitudinal low T2 signal intensity structure within the endocervical lumen that mimicked the appearance of a septum. Interpretations were performed independently by two MR radiologists and kappa analysis of interobserver agreement was performed.
Results
In 50 (19%) of the 260 women, both readers noted the presence of a pseudoseptum on at least one imaging plane. In 162 (62%), neither reader noted a pseudoseptum. Overall, there was 81% agreement between the readers. Kappa analysis yielded a value of 0.55, indicating a moderate degree of interobserver agreement beyond chance.
Conclusion
A pseudoseptum was depicted in 20% to 30% of women's cervices on T2‐weighted imaging. We hypothesize that chance long‐axis depiction of the endocervical folds can mimic a cervical septum. The presence of a pseudoseptum on MRI should be considered a normal finding and not a feature of a developmental anomaly of the uterus or cervix. J. Magn. Reson. Imaging 2007;26:963–965. © 2007 Wiley‐Liss, Inc.