Prognostic value of preoperative magnetic resonance imaging of the pelvis in rectal cancer

2003 ◽  
Vol 90 (11) ◽  
pp. 1422-1428 ◽  
Author(s):  
A. Martling ◽  
T. Holm ◽  
S. Bremmer ◽  
J. Lindholm ◽  
B. Cedermark ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Rectal Cancer ◽  
Magnetic Resonance ◽  
Prognostic Value ◽  
Preoperative Magnetic Resonance Imaging ◽  
Resonance Imaging ◽  
Preoperative Magnetic Resonance

scholarly journals Characteristics and Prognostic Significance of Preoperative Magnetic Resonance Imaging-Assessed Circumferential Margin in Rectal Cancer

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Xiaoji Ma ◽  
Xinxiang Li ◽  
Linghui Xu ◽  
Debing Shi ◽  
Tong Tong ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Rectal Cancer ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Local Recurrence ◽  
Prognostic Significance ◽  
Preoperative Magnetic Resonance Imaging ◽  
Circumferential Margin ◽  
Resonance Imaging ◽  
Preoperative Magnetic Resonance

Purpose. To study the characteristics and prognostic significance of preoperative magnetic resonance imaging- (MRI-) assessed circumferential margin (CRM) in rectal cancer.Methods. Patients underwent preoperative high resolution pelvic MRI, followed by resection of primary tumor. The relationship between MRI-assessed CRM and pathological CRM (pCRM) was studied, and survival analysis was used to determine the prognostic significance of MRI-assessed CRM.Results. Of all the 203 patients, the total accuracy of MRI-assessed CRM for predicting involvement of pCRM was 84.2%, sensitivity was 50%, and specificity was 86.8%. Anterior tumors were more possible to assess involvement of CRM by MRI, while the false positive rate was significantly higher than lateral or posterior tumor (87.5% versus 50%,p=0.0002). The 3-year local recurrence, disease-free survival, and overall survival rates were 35.6%, 58.1%, and 85.2% in patients with involved mrCRM, compared with 8.9%, 78.9%, and 92.3% in patients with clear mrCRM. In multivariate analysis, MRI-assessed CRM found an independent risk factor for local recurrence, with a hazard ratio of 3.49 (p=0.003).Conclusions. High resolution MRI was accurate to assess CRM preoperatively, while anterior tumor should be assessed more cautiously. Involvement of mrCRM was significantly associated with local recurrence regardless of pCRM status.

scholarly journals Laparoscopic resection of two peritoneal loose bodies on the rectosigmoid colon

2018 ◽  
Vol 7 (2) ◽  
pp. 736
Author(s):  
Ken-ichi Honda ◽  
Tomoko Nakagawa ◽  
Yasushi Kurihara ◽  
Koji Kajitani ◽  
Tetsuji Ando ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Laparoscopic Resection ◽  
Preoperative Magnetic Resonance Imaging ◽  
Pathological Examination ◽  
Resonance Imaging ◽  
Loose Bodies ◽  
Rectosigmoid Colon ◽  
Preoperative Magnetic Resonance

Laparoscopic examination of a 77-year-old woman revealed two peritoneal loose bodies connected to fatty appendices on the rectosigmoid colon and resected at the stalks. The peritoneal loose bodies were found to be fat-containing masses on preoperative magnetic resonance imaging, and postoperative pathological examination revealed fat degeneration tissue with or without fibrous outer layers.

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