Takahata A, Koyama T, Yamada K, Nishimura T, Fujii S, Togashi K
Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan.
Br J Radiol. 2008 Jan;81(961):e4-6. doi: 10.1259/bjr/22157913.
We report a case in which plicae palmatae (a normal anatomical structure of the cervix) was demonstrated on MRI. A 33-year-old woman with endometrial cancer underwent a pre-operative MRI examination before total abdominal hysterectomy. Axial T2 weighted images through the cervix demonstrated a longitudinal line of distinct hypointensity confined to the cervical canal. Gross examination of the surgical specimen revealed a relatively large median longitudinal ridge, as well as shorter folds fanning out laterally and upward, which were clearly identifiable on the endocervical wall. The midline longitudinal ridge was considered to represent a portion of the plicae palmatae, which are folds on the anterior and posterior walls of the uterine cervical canal. On MRI, one should avoid misdiagnosing this line of hypointensity as a septate uterus.
我们报告一例在MRI上显示有掌状襞（子宫颈的正常解剖结构）的病例。一名33岁患有子宫内膜癌的女性在全腹子宫切除术前接受了术前MRI检查。通过子宫颈的轴向T2加权图像显示出一条局限于宫颈管的明显低信号纵向线。手术标本的大体检查显示有一条相对较大的正中纵向嵴，以及从侧壁和向上呈扇形散开的较短皱襞，这些在宫颈内膜壁上清晰可见。中线纵向嵴被认为代表掌状襞的一部分，掌状襞是子宫颈管前后壁上的皱襞。在MRI上，应避免将这条低信号线误诊为纵隔子宫。
