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- W2000343168 abstract "Abstract OBJECTIVES: Intraductal papillary mucinous tumor (IPMT) is frequently associated with pancreatic cancer. We hypothesized that IPMT progresses to invasive cancer with K-ras mutations as an early event, and that invasive cancer affects survival. We compared survival after resection and determined whether K-ras mutations predicted survival in IPMT patients without or with invasive cancer. METHODS: Records of 47 patients with IPMT who were seen between 1983 and 1998 were reviewed retrospectively in 15 cases and prospectively in 32. All histological material was reviewed to confirm the diagnosis of IPMT and to assess invasion. Kaplan-Meier survival curves were analyzed by the log-rank test. The χ2 test was used for differences in K-ras between groups. RESULTS: There were 30 men and 17 women, with a mean age of 65 yr (range 36–90 yr). Of the patients, 26 had IPMT without invasive cancer and 19 had IPMT with invasion. Tissue diagnosis was available in 45 patients. K-ras was analyzed in 40 patients. Mutations were present in 15 of 23 patients (65%) without invasive cancer and in 14 of 17 patients (82%) with invasive cancer (p = ns). At 2.5 yr, the overall cumulative survival of IPMT patients without invasive cancer was 94% compared to 24% of patients with invasive cancer (p CONCLUSIONS: Invasive cancer in IPMT reduces the 2.5-yr survival after surgery from 93% to 24%. K-ras mutations occur before invasive cancer, and do not predict postoperative survival." @default.
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- W2000343168 date "2002-10-01" @default.
- W2000343168 modified "2023-10-18" @default.
- W2000343168 title "Invasive cancer and survival of intraductal papillary mucinous tumors of the pancreas" @default.
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- W2000343168 doi "https://doi.org/10.1016/s0002-9270(02)04380-0" @default.
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