Regular Article

British Journal of Cancer (2000) 83, 986–991. doi:10.1054/bjoc.2000.1427 www.bjcancer.com
Published online 19 September 2000

Time trends of surgical treatment and the prognosis for Japanese patients with gastric cancer

Y Maehara1, Y Kakeji1, S Oda1, I Takahashi1, K Akazawa2 and K Sugimachi1

  1. 1Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
  2. 2Department of Medical Informatics, Niigata University Medical Hospital, Niigata University, Niigata, Japan

Received 7 December 1999; Revised 29 May 2000; Accepted 22 June 2000.

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Abstract

The incidence of gastric cancer is much higher in Japan than in other countries even though diagnostics and treatments of such patients have improved. The objective of this study was to present an overview of the past, present and future of surgical treatment for our patients with gastric cancer. We analysed data on 2152 Japanese men and women with gastric cancer who underwent surgical resection from 1965 to 1995 at Kyushu University in Fukuoka, Japan, based on a univariate and the multivariate analysis. We focused on time trends of surgical treatment and the postoperative outcome. Over the years, there have been favourable changes in the numbers of patients with early gastric cancer. In all cases of gastric cancer, the rate of 18% in the first six year period (group 1) was 57% in the last 5 year period (group 6). Size of the tumour was smaller, well-differentiated tumour tissue was more common, and lymphatic involvement was less frequent. Lymph node metastasis, liver metastasis and peritoneal dissemination all decreased. Extensive lymph node dissection was more frequently done and the rate of curative resection (curability A and B) increased. With increases in identifying the early stage of cancer and better perioperative care, mortality rates 30 days after the surgery greatly decreased. Multivariate analysis revealed that the 10 factors of depth of invasion, lymph node metastasis, lymph node dissection, tumour size, liver metastasis, peritoneal dissemination, lymphatic invasion, vascular invasion, lesion in the whole stomach and lesion in the middle stomach were independent factors for determining the prognosis. Detection of the tumour in an early stage, standardized surgical treatment, including routine lymph node dissection, close follow-up schedules and better perioperative management are expected to increase survival time for patients with this malignancy. © 2000 Cancer Research Campaign

Keywords:

gastric cancer, surgical treatment, lymph node dissection, recurrence, prognosis

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