PURPOSE: We evaluated the effectiveness of dynamic computed tomography (CT) imaging in differentiating malignant intraductal papillary mucinous tumor (IPMT) with a large mural nodule from invasive ductal adenocarcinoma (IDAC). MATERIALS AND METHODS: Dynamic CT was done in six IPMT and nine IDAC cases. In the IPMT cases, we made a histological map of the tumor. A region of interest (ROI) was established in the mural nodule of the IPMT, in the IDAC, and in the noncancerous portion of the pancreas. The change of density was analyzed statistically during preenhancement and the early and late phases. These results were compared between the IPMT and IDAC cases. RESULTS: Histologically, most of the mural nodule was papillary adenocarcinoma. In the IPMT cases, the postenhancement density of the mural nodule was significantly higher during the early phase than during the late phase. In IDAC cases, the postenhancement density was significantly higher in the late phase than in the early phase. In the early phase, tumor-pancreas density was significantly higher in the IPMT than in the IDAC. In the late phase, tumor-pancreas density was significantly higher in the IDAC than in the IPMT. CONCLUSION: Dynamic CT is useful for differentiating malignant IPMT with a large mural nodule from IDAC.
PURPOSE: We evaluated the effectiveness of dynamic computed tomography (CT) imaging in differentiating malignant intraductal papillary mucinous tumor (IPMT) with a large mural nodule from invasive ductal adenocarcinoma (IDAC). MATERIALS AND METHODS: Dynamic CT was done in six IPMT and nine IDAC cases. In the IPMT cases, we made a histological map of the tumor. A region of interest (ROI) was established in the mural nodule of the IPMT, in the IDAC, and in the noncancerous portion of the pancreas. The change of density was analyzed statistically during preenhancement and the early and late phases. These results were compared between the IPMT and IDAC cases. RESULTS: Histologically, most of the mural nodule was papillary adenocarcinoma. In the IPMT cases, the postenhancement density of the mural nodule was significantly higher during the early phase than during the late phase. In IDAC cases, the postenhancement density was significantly higher in the late phase than in the early phase. In the early phase, tumor-pancreas density was significantly higher in the IPMT than in the IDAC. In the late phase, tumor-pancreas density was significantly higher in the IDAC than in the IPMT. CONCLUSION: Dynamic CT is useful for differentiating malignant IPMT with a large mural nodule from IDAC.
Authors: H Demachi; O Matsui; S Kobayashi; Y Akakura; K Konishi; M Tsuji; A Miwa; S Miyata Journal: J Comput Assist Tomogr Date: 1997 Nov-Dec Impact factor: 1.826
Authors: F Maire; P Hammel; B Terris; F Paye; J-Y Scoazec; C Cellier; M Barthet; D O'Toole; P Rufat; C Partensky; E Cuillerier; P Lévy; J Belghiti; P Ruszniewski Journal: Gut Date: 2002-11 Impact factor: 23.059
Authors: T Gabata; O Matsui; M Kadoya; J Yoshikawa; S Miyayama; T Takashima; T Nagakawa; M Kayahara; A Nonomura Journal: Radiology Date: 1994-12 Impact factor: 11.105
Authors: J K Sai; M Suyama; Y Kubokawa; K Yamanaka; H Tadokoro; Y Iida; N Sato; K Suda; B Nobukawa; T Maehara Journal: Abdom Imaging Date: 2003 Sep-Oct