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Endoscopic ultrasound and computed tomography in restaging and predicting prognosis after neoadjuvant chemotherapy in patients with locally advanced gastric cancer
Author(s) -
Park Sook Ryun,
Lee Jong Seok,
Kim Chan Gyoo,
Kim Hark Kyun,
Kook MyeongCherl,
Kim YoungWoo,
Ryu Keun Won,
Lee Jun Ho,
Bae JaeMoon,
Choi Il Ju
Publication year - 2008
Publication title -
cancer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.052
H-Index - 304
eISSN - 1097-0142
pISSN - 0008-543X
DOI - 10.1002/cncr.23483
Subject(s) - medicine , docetaxel , chemotherapy , endoscopic ultrasound , radiology , cancer , ultrasound , oncology
BACKGROUND. The objective of the current study was to assess the staging accuracy and prognostic role of preoperative endoscopic ultrasound (EUS) and computed tomography (CT) in patients with locally advanced gastric cancer (LAGC) after neoadjuvant chemotherapy. METHODS. Presurgical LAGC patients underwent EUS and CT before and after 3 cycles of neoadjuvant chemotherapy. Chemotherapy was comprised of docetaxel (at a dose of 36 mg/m 2 ) and cisplatin (at a dose of 40 mg/m 2 ) on Days 1 and 8 of a 3‐week cycle. RESULTS. Forty patients were enrolled in the study. After chemotherapy, the accuracy of EUS and CT was found to be 47% and 57%, respectively for T classification ( P = .22) and 39% and 37%, respectively for N classification (P > .99). The 3‐year overall survival (OS) rate for patients downstaged with EUS for T and/or N classification was greater than that for nondownstaged patients (69% vs 41%; P = .05). The 2‐year recurrence‐free survival (RFS) rate was also better for the EUS‐downstaged patients than for the nondownstaged patients (77% vs 47%; P = .04). On multivariate analysis, EUS downstaging was found to be correlated with OS (hazards ratio [HR] of 0.12; P = .04), and was correlated with RFS with borderline statistical significance (HR of 0.27; P = .07). The differences in OS and RFS between the patients downstaged with CT and those not downstaged were not found to be statistically significant. CONCLUSIONS. Restaging by EUS and CT after neoadjuvant chemotherapy in patients with LAGC was found to be inaccurate. However, T and/or N downstaging by EUS was found to be correlated with better OS and RFS. Thus, downstaging by EUS may be a useful clinical parameter with which to predict a better outcome for LAGC patients. Cancer 2008. © 2008 American Cancer Society.