Surgical treatment of intraductal papillary-mucinous tumor (IPMT) of the pancreas: operative indications based on surgico-pathologic study focusing on invasive carcinoma derived from IPMT |
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Authors: | Seki Makoto Yanagisawa Akio Ohta Hirotoshi Ninomiya Yasuro Sakamoto Yoshihiro Yamamoto Junji Yamaguchi Toshiharu Ninomiya Eiji Takano Koichi Aruga Akiko Yamada Keiko Sasaki Keiko Kato Yo |
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Affiliation: | (1) Department of Surgery, Cancer Institute Hospital, 1-37-1 Kami-Ikebukuro, Toshima-ku, Tokyo, 170-8455, Japan;(2) Department of Pathology, Cancer Institute Hospital, 1-37-1 Kami-Ikebukuro, Toshima-ku, Tokyo, 170-8455, Japan;(3) Department of Internal Medicine, Cancer Institute Hospital, 1-37-1 Kami-Ikebukuro, Toshima-ku, Tokyo, 170-8455, Japan;(4) Department of Radiology, Cancer Institute Hospital, 1-37-1 Kami-Ikebukuro, Toshima-ku, Tokyo, 170-8455, Japan |
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Abstract: | Background/Purpose. Between 1979 and 2000, 51 patients with intraductal papillary-mucinous tumor (IPMT) of the pancreas underwent surgical resection.Methods. The patients were reviewed to disclose the surgical pathology of invasive carcinoma derived from IPMT and to determine the surgical indications for IPMT on the basis of the pathologic findings.Results. The incidence of invasive carcinoma derived from IPMT according to the localization of the tumor was as follows: 4/9 (44%) in the main pancreatic duct (MPD type), 4/9 (44%) showing ductal spread from the MPD to branch ducts (mixed type), and 2/33 (6%) in the 2 branch duct (branch type). The maximal size of the intraductal spread of invasive carcinomas (8 of 18 cases in the MPD and mixed type together and 2 of 33 cases in the branch type) was as follows: 6/8 (75%) in the MPD and mixed type were over 6cm in size, and the 2-branch-type invasive carcinomas were within the 3-cm size range.Conclusions. We concluded that for both invasive and noninvasive IPMTs, surgical resection was necessary for any MPD or mixed-type IPMTs, and that surgical resection was appropriate for branch-type lesions larger than or equal to 3cm in diameter, or for lesions smaller than 3cm showing rapid growth on clinical images. |
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Keywords: | Intraductal papillary-mucinous tumor (IPMT) Invasive carcinoma derived from IPMT Operative indication |
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