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    Keywords: CANCER ; tumor ; carcinoma ; CELL ; Germany ; CT ; imaging ; DISEASE ; DIFFERENTIATION ; TISSUE ; computed tomography ; SURGERY ; PATIENT ; primary ; MRI ; MAGNETIC-RESONANCE ; magnetic resonance imaging ; NO ; DIFFERENCE ; NUMBER ; METASTASIS ; metastases ; REGION ; REGIONS ; DISSEMINATED TUMOR-CELLS ; adenocarcinoma ; COMPUTED-TOMOGRAPHY ; CELL CARCINOMA ; renal cell carcinoma ; pancreas ; ENHANCEMENT ; methods ; multidetector CT ; RENAL-CELL
    Abstract: Aims: To investigate the characteristics of metastasis to the pancreas using computed tomography (CT) and magnetic resonance imaging (MRI). Methods: Twenty-two patients with metastases to the pancreas were examined preoperatively by MRI (7/22) and/or multidetector CT (15/22). Pre- and post-contrast images were acquired and morphology, size, and contrast enhancement of the tumor analyzed. Subsequently, all patients underwent surgery, and the histopathologic findings were compared with the imaging results. Results: In 22 patients, a total of 29 metastases were found on CT and MRI. These metastases originated from renal cell carcinomas (RCC; 22/29), colorectal carcinoma (3/29), and other malignancies (4/29). The metastases differed not in size or location, but in their contrast enhancement characteristics. RCC metastases had either intense homogeneous enhancement (in small lesions) or rim enhancement (in large lesions). Outer regions of colorectal metastases showed no difference from normal pancreatic tissue, whereas the inner area showed hypo-enhancement due to central necrosis. Conclusion: Imaging features of metastases from RCC point to their primary origin. While they can be distinguished from primary adenocarcinoma of the pancreas, differentiation from endocrine carcinoma might be difficult. Differentiation of colorectal carcinoma remains to be investigated on larger numbers of cases. Copyright (C) 2008 S. Karger AG, Basel and IAP
    Type of Publication: Journal article published
    PubMed ID: 18434757
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