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Preoperative Evaluation of Lower Rectal Cancer by Pelvic MR with and without Gel Filling

Other Titles
 하부직장암 환자에서 초음파겔 삽입 전후의 골반 자기공명영상의 비교 
 Dae Jung Kim  ;  Joo Hee Kim  ;  Joon Seok Lim  ;  Jae Joon Chung  ;  Jeong Sik Yu  ;  Myeong Jin Kim  ;  Ki Whang Kim 
 Journal of the Korean Society of Magnetic Resonance in Medicine (대한자기공명의과학회지), Vol.18(4) : 323-331, 2014 
Journal Title
Journal of the Korean Society of Magnetic Resonance in Medicine(대한자기공명의과학회지)
Issue Date
Rectal cancer ; Magnetic resonance imaging (MRI) ; Rectum ; Ultrasonographic transmission gel ; Preoperative staging
Purpose : To assess the usefulness of rectal filling using ultrasonographic gel in patients with lower rectal cancer.

Materials and Methods: Twenty five patients with lower rectal cancer were enrolled. High resolution pelvic MR was performed twice before and after gel filling. Independently and retrospectively, two radiologists reviewed each set of MR images using five-grade scales for sphincter involvement, CRM (circumferential resection margin) involvement and depiction of the tumor. Same two radiologists retrospectively performed consensus review of each set of MR images for tumor distance from the anal verge and T&N staging.

Results: Tumor depiction scores from MR with gel filling were significantly higher than those of MR without distention (p<0.001). Compared to MR without distension, MR with gel filling had no significant differences in prediction of CRM or sphincter involvement (p>0.05). Distance from the anal verge was significantly different between MR with gel filling and rigid endoscopy ($6.8{\pm}1.6cm$ vs. $5.8{\pm}1.6cm$, p=0.001). There were no significant differences between pathological staging and MR staging with or without gel filling.

Conclusion: MR with gel filling improved tumor depiction. And also MR with gel filling revealed same ability for the predictions of CRM or sphincter invasion in patients with lower rectal cancer, comparing with MR without gel filling.
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Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Ki Whang(김기황)
Kim, Myeong Jin(김명진) ORCID logo https://orcid.org/0000-0001-7949-5402
Kim, Joo Hee(김주희) ORCID logo https://orcid.org/0000-0001-5383-3602
Yu, Jeong Sik(유정식) ORCID logo https://orcid.org/0000-0002-8171-5838
Lim, Joon Seok(임준석) ORCID logo https://orcid.org/0000-0002-0334-5042
Chung, Jae Joon(정재준) ORCID logo https://orcid.org/0000-0002-7447-1193
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