Amr K El Jack1, Evan S Siegelman. 1. Department of Radiology, University of Pennsylvania Health System, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA. amr_eljack@hotmail.com
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. (c) 2007 Wiley-Liss, Inc.
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. (c) 2007 Wiley-Liss, Inc.
Authors: Ali Gholipour; Judith A Estroff; Carol E Barnewolt; Richard L Robertson; P Ellen Grant; Borjan Gagoski; Simon K Warfield; Onur Afacan; Susan A Connolly; Jeffrey J Neil; Adam Wolfberg; Robert V Mulkern Journal: Concepts Magn Reson Part A Bridg Educ Res Date: 2014-11 Impact factor: 0.481