Becker, K.* ; Langer, R.* ; Reim, D.* ; Novotny, A.* ; Meyer zum Büschenfelde, C.* ; Engel, J.* ; Friess, H.* ; Höfler, H.
Significance of histopathological tumor regression after neoadjuvant chemotherapy in gastric adenocarcinomas: A summary of 480 cases.
Ann. Surg. 253, 934-939 (2011)
OBJECTIVE: An increasing number of patients with locally advanced gastric carcinomas (GC) are being treated with preoperative chemotherapy before surgery. BACKGROUND: Histopathological tumor regression may have an important prognostic impact in addition to the UICC-TNM classification system. METHODS: We evaluated the histopathological tumor regression in 480 surgical resection specimens of GC after neoadjuvant cisplatin-based chemotherapy, using an established system encompassing three tumor regression grades based on the estimation of the percentage of residual tumor tissue at the primary tumor site in relation to the macroscopically identifiable former tumor bed. Tumor regression was correlated to clinicopathological characteristics and patient survival. RESULTS: Of the patients in this study, 102 (21.2%) had complete or subtotal tumor regression (<10% residual tumor), 121 (25.2%) had partial tumor regression (10-50% residual tumor), and 257 (53.5%) had minimal or no regression (>50% residual tumor). Tumor regression was significantly associated with posttreatment tumor category (pT), lymph node status (pN), lymphatic invasion status (pL), and resection status (P < 0.001). Major histopathological regression was less frequent in tumors of the distal stomach and tumors of nonintestinal type (P = 0.003). Tumor regression (P = 0.009) and postoperative Lymph node status (P < 0.001) were independent prognostic factors for survival in a multivariate analysis of tumor regression, ypT/N/L category, resection status, grading and Lauren´s classification. CONCLUSIONS: Assessment of histological tumor regression after preoperative chemotherapy in GC provides objective and highly valuable prognostic information in addition to posttherapeutic lymph node status. A standardized tumor regression grading system should be implemented in pathological reports of these tumors.
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Typ der Hochschulschrift
Herausgeber
Schlagwörter
Early metabolic-response; Phase-II trial; Preoperative chemoradiation; Gastroesophageal junction; Esophagogatric cancer; Pathological response; Follow-up; Carcinoma; Therapy; Chemoradiotherapy
Keywords plus
Sprache
Veröffentlichungsjahr
2011
Prepublished im Jahr
HGF-Berichtsjahr
2011
ISSN (print) / ISBN
0003-4932
e-ISSN
1528-1140
ISBN
Bandtitel
Konferenztitel
Konferzenzdatum
Konferenzort
Konferenzband
Quellenangaben
Band: 253,
Heft: 5,
Seiten: 934-939
Artikelnummer: ,
Supplement: ,
Reihe
Verlag
Wolters Kluwer Health
Verlagsort
Tag d. mündl. Prüfung
0000-00-00
Betreuer
Gutachter
Prüfer
Topic
Hochschule
Hochschulort
Fakultät
Veröffentlichungsdatum
0000-00-00
Anmeldedatum
0000-00-00
Anmelder/Inhaber
weitere Inhaber
Anmeldeland
Priorität
Begutachtungsstatus
Peer reviewed
POF Topic(s)
30504 - Mechanisms of Genetic and Environmental Influences on Health and Disease
Forschungsfeld(er)
Enabling and Novel Technologies
PSP-Element(e)
G-500300-001
Förderungen
Copyright
Erfassungsdatum
2011-09-09