Takahata Akiko, Koyama Takashi, Kido Aki, Kataoka Masako, Umeoka Shigeaki, Nishizawa Sadahiko, Nishimura Tsunehiko, Togashi Kaori
Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan.
Abdom Imaging. 2009 Mar-Apr;34(2):277-9. doi: 10.1007/s00261-008-9384-8.
The plicae palmatae is a developmental remnant of the Müllerian ductal fusion, which is demonstrated as a ridge of low intensity in the cervical canal on axial T2-weighted MR images. The identification of the plicae palmatae on MR imaging is beneficial for avoiding misinterpretation of this finding as anomalous uterine septum. The current study is performed to investigate the frequency of this finding and its variation among different age groups.
Axial T2-weighted images in 433 subjects were evaluated regarding the presence of the plicae palmatae and uterine anomaly.
The frequency of the plicae palmatae was 47.5-53.2% in the third to fifth decade groups, but it was significantly lower in the sixth decade group (24.8%) than in the fifth decade group (53.2%). In three subjects with uterine anomalies, the plicae palmatae was recognized in a bicornuate uterus with single cervix, whereas it was not identified in unicornuate uterus and bicornuate uterus with duplicated cervices.
The plicae palmatae is commonly encountered in routine MR images of normal uterus, especially in reproductive-aged women.
掌状襞是苗勒管融合的发育遗迹，在轴位T2加权磁共振成像上表现为宫颈管内的低强度嵴。在磁共振成像上识别掌状襞有助于避免将此发现误判为子宫纵隔异常。本研究旨在调查这一发现的频率及其在不同年龄组中的变化。
对433名受试者的轴位T2加权图像进行掌状襞和子宫异常情况的评估。
在第三至第五个十年组中，掌状襞的出现频率为47.5%至53.2%，但在第六个十年组中（24.8%）明显低于第五个十年组（53.2%）。在三名子宫异常的受试者中，在单宫颈双角子宫中识别出掌状襞，而在单角子宫和双宫颈双角子宫中未发现。
掌状襞在正常子宫的常规磁共振图像中常见，尤其是在育龄妇女中。
