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Plicae palmatae of the cervical canal visualized on MRI

¹ Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, ² Department of Radiology, Kyoto University Hospital, and Departments of ³ Gynecology and Obstetrics and, ⁴ Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan

View larger version (158K): [in this window] [in a new window]   Figure 1. AxialT2 weighted fast spin-echo image (repetition time/echo time = 5000/87) demonstrates a line of low intensity at the midline of the endocervix (arrow).

View larger version (138K): [in this window] [in a new window]   Figure 2. Gross photograph of the uterus after formalin fixation demonstrates a longitudinal ridge at the midline of the posterior cervical wall(arrows). At the fundus of the uterine corpus, endometrial cancer can be recognized as a lesion protruding into the uterine cavity (arrowheads).

View larger version (16K): [in this window] [in a new window]   Figure 3. Schematic line diagram of the plicae palmatae in the uterus. Branching lines in the cervical canal represent plicae palmatae, which consist of a median longitudinal ridge and shorter folds fanning out laterally and upward.