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Multidetector CT Evaluation of the Course of Nonresectable Pancreatic Carcinomas with Neoadjuvant Therapy

Klauss M.a · Alt C.D.a · Welzel T.c · Werner J.b · Büchler M.W.b · Richter G.M.a · Kauffmann G.W.a · Kauczor H.U.a · Grenacher L.a
aDepartment of Diagnostic Radiology, bSurgical Clinic, and cDepartment of Therapeutic Radiology, University of Heidelberg, Heidelberg, Germany Pancreatology 2009;9:621–630 (DOI:10.1159/000212096)

Abstract

Objective: A prospective study to determine the value of multidetector CT (MD-CT) in assessing the course of nonresectable pancreatic carcinoma during therapy. Material and Methods: 26 patients with nonresectable pancreatic carcinoma underwent MD-CT before and after therapy. The examinations were evaluated with regard to tumor size and vascular invasion using an invasion score (IS) by 2 radiologists independently (κ analysis). Diagnosis was confirmed surgically, by biopsy or clinical course. Results: Sensitivity for the assessment of irresectability was 100%. Following therapy, 54% of all the tumors were smaller (14/26), 42% had increased in volume (11/26), and one tumor remained stable (1/26). The IS (veins) during follow-up changed in 26 patients (portal vein: 5 higher (mean score 10.4/16.2), 4 lower (mean score 17.5/11.5); superior mesenteric vein: 12 higher (11/14.4), 5 lower (16.2/14.6); p = 0.026). The IS (arteries) changed in 13 patients (celiac trunk: 3 higher (3.3/10); hepatic artery: 4 higher (5.7/10.2), 3 lower (11.6/10.3); superior mesenteric artery: 2 higher (4.5/9.5), 1 lower (12/11)). The κ values were calculated between 0.56 and 0.87. Conclusion: MD-CT is suitable for evaluating tumor spread during therapy for nonresectable pancreatic carcinoma. The IS is useful for assessing the degree of change in vessel invasion.

 

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