Head and Neck Imaging
Application of MRI Imaging in Diagnosis of Rectal Adenoma and Clinical Analysis
Author：LI Juan, GAO Xue-mei, CHENG Jing-liang
affiliation：Department of MRI, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan Province, China
PDFAbstract
Objective To explore the MRI imaging of rectal adenoma and clinical analysis, and to improve the level of diagnosis. Methods 26 cases with rectal adenoma pathologically proved were analysed retrospectively. Results The pathological types of 26 cases included 4 cases of tubular adenoma, 17 cases of tubulovillous adenoma and 5 cases of villous adenoma. The MRI manifestations were as followed: crumb or cauliflower growing from the mucous membrane layer to the lumen, no thickening of rectal wall, wide base. On un-enhanced T1WI the lesions showed hypointense mainly, on T2WI showed slightly hyperintense mainly, on b=800s/mm2 DWI showed mild diffusion limited as slightly hyperintense. After contrast administration, the lesions showed slightly-moderately enhancement mainly. There was a venting gap between the tumor and the rectal wall in 20 cases, which were regarded as the characteristic feature of rectal adenoma. Conclusion MRI was of value in the diagnosis and differential diagnosis of rectal adenoma.
【Keyword】Rectal Tumors; Adenoma; Magnetic Resonance Imaging
【Chart number】R735.3+5；R445.2
【Document Identification Number】A
【DOI】10.3969/j.issn.1672- 5131.2017.09.037
Chinese journal of CT and MRI
th15Volume， th 9 Issue
2017Year09Month
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