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- W2591972102 abstract "Pleural invasion has been recognized as an important negative prognostic factor in non-small cell lung cancer (NSCLC), and therefore, accurate evaluation is required. However, when the visceral pleura adheres to the parietal pleura around a tumor and parietal pleural structures are destroyed and unrecognizable as a result of inflammation, it is often difficult to accurately evaluate pleural invasion, and classification of the T stage is unclear. To aid in categorization, we defined this status as pl1-3 and investigated the prognostic impact of the pl1-3 status on NSCLC.We retrospectively examined the clinicopathological characteristics and prognoses of 929 NSCLC patients who underwent curative surgical resection. The pl1-3 status was defined as invasion beyond the elastic layer of the visceral pleura (pl1 or higher) but showing unclear parietal pleural invasion. We compared the prognoses of pl1-3 status NSCLC patients with that of patients with other pleural invasion statuses.Thirty-one patients (3%) had a pl1-3 status. The 5-year overall survival rate for pl1-3 patients was 58.9%, and the prognosis was significantly worse than pl1 (p=0.04). In pN0 cohort, pl1-3 disease had a significantly worse prognosis than pl1 and pl2 diseases (p=0.01 and 0.04, respectively) and a similar prognosis to pl3 disease. Furthermore, similar relationships were also observed after adjusting for other prognostic factors in multivariate analysis. Among the pl1-3 and pN0 patients, 11 (46%) developed recurrences (9 patients had distant metastasis, one had local recurrence, and one had both). Although the proportion of pl1-3 patients who underwent adjuvant therapy was similar to that of T3 patients, more individuals received oral tegafur-uracil treatment than intravenous chemotherapy.These results indicate that pl1-3 patients can be managed in the same manner as patients with T3 and pl3 disease. These results may be informative for treatment decisions during postoperative chemotherapy." @default.
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- W2591972102 date "2017-06-01" @default.
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- W2591972102 title "Prognostic impact of uncertain parietal pleural invasion at adhesion sites in non-small cell lung cancer patients" @default.
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- W2591972102 doi "https://doi.org/10.1016/j.lungcan.2017.03.002" @default.
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