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      Evaluation of Multislice Spiral Computed Tomography Perfusion Imaging for the Efficacy of Preoperative Concurrent Chemoradiotherapy in Middle-Aged and Elderly Patients with Locally Advanced Gastric Cancer

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          Abstract

          Background

          This study aimed to investigate the predictive value of multislice spiral computed tomography (MSCT) perfusion imaging for the efficacy of preoperative concurrent chemoradiotherapy (CCRT) in middle-aged and elderly patients with locally advanced gastric cancer (LAGC).

          Material/Methods

          One-hundred twenty-six middle-aged and elderly patients with LAGC were selected. MSCT was performed before and after CCRT to obtain perfusion parameters: blood flow volume (BF), blood volume (BV), mean transit time (MTT), and permeability surface (PS). After CCRT, according to Response Evaluation Criteria in Solid Tumors (RECIST), patients were categorized into the effective group and the ineffective group. Overall survival rate was measured by Kaplan-Meier analysis. ROC curve was applied to evaluate the predictive value of perfusion parameters. Multiple logistic regression analysis was applied to analyze the association of perfusion parameters with the efficacy of preoperative treatment.

          Results

          Tumor volume reduction rates of the effective and ineffective groups were 59.23±8.53% and 10.41±3.36%. BF, BV, and PS values in the effective group were significantly decreased after CCRT. ROC curves indicated high sensitivities and specificities of BF value (79.00%, 73.44%), BV value (71.00%, 75.00%), and PS value (82.30%, 90.63%). The incidence rate of weakness and anorexia in the effective group was much higher than that in the ineffective group. Patients with low BF, BV, and PS values (less their optimal cutoff values) had longer survival times than these with high BF, BV, and PS values.

          Conclusions

          MSCT might have predictive values for the efficacy of preoperative CCRT in the treatment of LAGC.

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          Most cited references28

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          Five-year outcomes of a randomized phase III trial comparing adjuvant chemotherapy with S-1 versus surgery alone in stage II or III gastric cancer.

          Mitsuru Sasako, Shinichi Sakuramoto, Hitoshi Katai … (2011)
          The first planned interim analysis (median follow-up, 3 years) of the Adjuvant Chemotherapy Trial of S-1 for Gastric Cancer confirmed that the oral fluoropyrimidine derivative S-1 significantly improved overall survival, the primary end point. The results were therefore opened at the recommendation of an independent data and safety monitoring committee. We report 5-year follow-up data on patients enrolled onto the ACTS-GC study. Patients with histologically confirmed stage II or III gastric cancer who underwent gastrectomy with D2 lymphadenectomy were randomly assigned to receive S-1 after surgery or surgery only. S-1 (80 to 120 mg per day) was given for 4 weeks, followed by 2 weeks of rest. This 6-week cycle was repeated for 1 year. The primary end point was overall survival, and the secondary end points were relapse-free survival and safety. The overall survival rate at 5 years was 71.7% in the S-1 group and 61.1% in the surgery-only group (hazard ratio [HR], 0.669; 95% CI, 0.540 to 0.828). The relapse-free survival rate at 5 years was 65.4% in the S-1 group and 53.1% in the surgery-only group (HR, 0.653; 95% CI, 0.537 to 0.793). Subgroup analyses according to principal demographic factors such as sex, age, disease stage, and histologic type showed no interaction between treatment and any characteristic. On the basis of 5-year follow-up data, postoperative adjuvant therapy with S-1 was confirmed to improve overall survival and relapse-free survival in patients with stage II or III gastric cancer who had undergone D2 gastrectomy.
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            Gastric cáncer: Overview

            M. Blanca Piazuelo, Pelayo Correa (2013)
            Gastric cancer ranks fourth in incidence and second in mortality among all cancers worldwide. Despite the decrease in incidence in some regions of the world, gastric cancer continues to present a major clinical challenge due to most cases being diagnosed in advanced stages with poor prognosis and limited treatment options. The development of gastric cancer is a complex and multifactorial process involving a number of etiological factors and multiple genetic and epigenetic alterations. Among the predisposing factors are: Helicobacter pylori infection, high salt intake, smoking, and in a small percentage of patients, a familial genetic component. More than 95% of stomach cancer cases are adenocarcinomas, which are classified into two major histologic types: intestinal and diffuse. Intestinal type adenocarcinoma is preceded by a sequence of gastric lesions known as Correa´s cascade and is the histologic type associated with the global decrease in gastric cancer rates. Diffuse type adenocarcinomas have a more aggressive behavior and worse prognosis than those of the intestinal type. According to the anatomical location, adenocarcinomas are classified as proximal (originating in the cardia) and distal (originating in the body and antrum). This classification seems to recognize two different clinical entities. Surgical resection of the tumor at an early stage is the only effective treatment method. Therefore, the identification and surveillance of patients at risk may play a significant role in survival rates. Anti-Helicobacter pylori therapy has been shown to be an effective measure in the prevention of gastric cancer.
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              Clinicopathological Variation of Lauren Classification in Gastric Cancer.

              Yun-Chi Chen, Wen-Liang Fang, Ruei-Fang Wang … (2016)
              The investigation of prognostic factor for gastric cancer is still desirable because of dismal prognosis in gastric cancer. Lauren's classification is currently a useful histological classification. There are few large series evaluating the prognostic significance of Lauren's classification in gastric cancer. From January 1987 to December 2013, a total of 3071 patients received gastrectomy for gastric cancer. According Lauren's classification, 1423(46.3%) patients were intestinal type, 1000 patients (32.6%) were diffuse type, and 648 patients (21.1%) were mixed type. The clinicopathological characteristics and prognosis in Lauren's classification were analyzed in these patients. Our results showed that patients with intestinal type gastric cancer (57.7%) had a better 5-year overall survival than diffuse type (45.6%) and mixed type (43.4%, P < 0.001). The clinicopathological characteristics showed that gastric cancer patients with intestinal type were older (P < 0.001), male predominant (P < 0.001), smaller tumor size (P < 0.001), distal stomach predominant (P < 0.001), relative well differentiated (P < 0.001), less advanced Borrmann type (P < 0.001), less scirrhous type stromal reaction(P < 0.001), less infiltrating type of Ming's histology type(P < 0.001), less tumor invasion depth and less lymphovascular invasion (P < 0.001). Multivariate analysis with overall survival as an endpoint showed that age (P = 0.005), Borrmann classification (P < 0.001), pathological T category (P = 0.023), pathological N category (P < 0.001) and Lauren's classification (P = 0.003) were significant correlated in gastric cancer. Lauren's classification is an independent prognostic factor in gastric cancer patient undergoing gastrectomy. Lauren's classification can serve as a prognostic marker for gastric cancer patient receiving gastrectomy. The clinicopathological appearance and prognosis of mixed type gastric cancer is similar to diffuse type gastric cancer.
              Article 0 comments Cited 120 times – based on 0 reviews     Review now
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                Author and article information

                Journal
                Journal ID (nlm-ta): Med Sci Monit
                Journal ID (iso-abbrev): Med. Sci. Monit
                Journal ID (publisher-id): Medical Science Monitor
                Title: Medical Science Monitor : International Medical Journal of Experimental and Clinical Research
                Publisher: International Scientific Literature, Inc.
                ISSN (Print): 1234-1010
                ISSN (Electronic): 1643-3750
                Publication date Collection: 2018
                Publication date (Electronic): 12 January 2018
                Volume: 24
                Pages: 235-245
                Affiliations
                [1 ]Department of Radiology, Dongying People’s Hospital, Dongying, Shandong, P.R. China
                [2 ]Nursing Department, Dongying People’s Hospital, Dongying, Shandong, P.R. China
                [3 ]Department of MRI Division, Shengli Oilfield Central Hospital, Dongying, Shandong, P.R. China
                Author notes
                Corresponding Author: Xiao Liang, e-mail: liangjianxiaoljx@ 123456163.com
                [A]

                Study Design

                [B]

                Data Collection

                [C]

                Statistical Analysis

                [D]

                Data Interpretation

                [E]

                Manuscript Preparation

                [F]

                Literature Search

                [G]

                Funds Collection

                [*]

                These authors contributed equally to this study and share first authorship

                Article
                Publisher ID: 905143
                DOI: 10.12659/MSM.905143
                PMC ID: 5774178
                PubMed ID: 29326419
                SO-VID: 1ca2cbf0-d662-4505-8ea2-3e329cbda8d4
                Copyright © © Med Sci Monit, 2018
                License:

                This work is licensed under Creative Common Attribution-NonCommercial-NoDerivatives 4.0 International ( CC BY-NC-ND 4.0)

                History
                Date received : 02 May 2017
                Date accepted : 08 June 2017
                Categories
                Subject: Clinical Research

                Keywords: chemoradiotherapy,multidetector computed tomography,perfusion imaging,self efficacy,stomach neoplasms
                Data availability:
                Keywords: chemoradiotherapy, multidetector computed tomography, perfusion imaging, self efficacy, stomach neoplasms

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