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Accuracy in Differentiation of Mucinous and Nonmucinous Rectal Carcinoma on MR Imaging

 Myeong-Jin Kim  ;  Jeong Seon Park  ;  Won Ho Kim  ;  Young Nyun Park  ;  Hee Jung Moon  ;  Joo Hee Kim  ;  Nam Kyu Kim  ;  Sung Il Park 
 Journal of Computer Assisted Tomography, Vol.27(1) : 48-55, 2003 
Journal Title
 Journal of Computer Assisted Tomography 
Issue Date
PURPOSE: The purpose of this work was to determine the diagnostic accuracy of MRI for the differentiation of mucinous and nonmucinous carcinomas in patients with rectal carcinomas. METHOD: Seventy-six patients with pathologically proven rectal adenocarcinomas were evaluated with MRI. Both T2-weighted fast spin echo and T1-weighted spin echo images were independently reviewed by two radiologists who were blinded for tumor histology. Of the 76 cases, mucin pools were found in 28 (37%), and 16 had a mucin pool occupying >or=50% of the tumor (mucinous carcinoma). The sensitivity, specificity, accuracy, and positive and negative predictive values of distinguishing between mucinous and nonmucinous carcinomas were calculated. The interobserver agreement was estimated using kappa statistics. RESULTS: The accuracies of the diagnosis of mucinous carcinoma were 97% for Radiologist 1 and 96% for Radiologist 2. The sensitivities and specificities for diagnosing a mucinous carcinoma were 94 and 98% for Radiologist 1 and 100 and 95% for Radiologist 2, respectively. Interobserver agreement was good (kappa = 0.61) for the identification of a mucin pool and was excellent (kappa = 0.81) for the diagnosis of a mucinous carcinoma. CONCLUSION: Differentiation of mucinous and nonmucinous rectal carcinoma is highly accurate on preoperative MRI.
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1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Surgery (외과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Pathology (병리학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Nam Kyu(김남규) ORCID logo https://orcid.org/0000-0003-0639-5632
Kim, Myeong Jin(김명진) ORCID logo https://orcid.org/0000-0001-7949-5402
Kim, Won Ho(김원호) ORCID logo https://orcid.org/0000-0002-5682-9972
Kim, Joo Hee(김주희) ORCID logo https://orcid.org/0000-0001-5383-3602
Park, Young Nyun(박영년) ORCID logo https://orcid.org/0000-0003-0357-7967
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