Population-based survival of cancer patients diagnosed between 1993 and 1999 in Japan: a chronological and international comparative study.
ABSTRACT The purpose of the present study was to collect data from population-based cancer registries and to calculate relative 5-year survival of cancer patients in Japan. We also sought to determine time trends and to compare the results with international studies.
We asked 11 population-based cancer registries to submit individual data for patients diagnosed from 1993 to 1999, together with data on outcome after 5 years. Although all these registries submitted data (491 772 cases), only six met the required standards for the quality of registration data and follow-up investigation. The relative 5-year survival calculated by pooling data from 151 061 cases from six registries was taken as the survival for cancer patients in Japan.
Relative 5-year survival (1997-99) was 54.3% for all cancers (males: 50.0%, females: 59.8%). Survival figures for all sites changed slightly over the 7-year period, from 53.2% for the first 4 years of the study (1993-96) to 54.3% for the last 3 years (1997-99), however, a major improvement was observed in several primary sites. Some overall survival was lower in Japan than in the USA, but similar to that in European countries. Specifically, survival for uterine cancer, prostate cancer, testis cancer, lymphoma and leukemia was much lower in Japan than in other countries. However, survival was better in Japan mainly for cancers of the esophagus, stomach, colon, liver and gallbladder.
The study suggests an improvement in cancer survival in several primary sites in Japan, which is consistent with the development of treatments and early detection.
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ABSTRACT: Objectives To describe the clinical and pathological characteristics and oncological outcomes of testicular cancer diagnosed in Japan, we report the results of the testicular cancer registration carried out by the Japanese Urological Association.Methods Testicular cancer survey was conducted by the Japanese Urological Association in 2011 to register newly diagnosed testicular cancers in 2005 and 2008. The survey included details such as age, presenting symptoms, physical examination findings, tumor markers, histopathology, clinical stage, initial treatment and clinical outcomes.ResultsWe analyzed 1121 cases of testicular primary germ cell tumor among 1157 registered patients. The median age was 37.0 years. Seminomas and non-seminomatous germ cell tumors accounted for 61.9% and 38.1%, respectively. Measurements of tumor markers were documented in 98.6% of the patients; however, there was an unsatisfactory uniform measurement of human chorionic gonadotropin, which made it difficult to evaluate the International Germ Cell Consensus Classification in all patients. The 1- and 3-year overall survival rates from the entire cohort were 98.3% and 96.8%, respectively. According to the International Germ Cell Consensus Classification, 3-year overall survival rates in the good, intermediate, and poor prognosis group were 99.1%, 100% and 79.9%, respectively.Conclusions The present report is the first large-scale study of the characteristics and survival of testicular cancer patients in Japan based on multi-institutional registry data, and showed a good prognosis even in an advanced stage. The improved survival attributed substantially to accurate diagnosis and effective multimodal treatment.International Journal of Urology 05/2014; · 1.73 Impact Factor
- Japanese Journal of Clinical Oncology 04/2014; 44(4):398-9. · 1.90 Impact Factor
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ABSTRACT: Background Esophageal squamous cell carcinoma (ESCC) is a highly malignant disease because of its aggressive biological behavior and metastatic potential. Although several molecular markers have been identified as prognostic factors and/or clinicopathological correlation for the patients of ESCC, it has not been established as the effective new treatment for ESCC patients yet. Hepatocyte growth factor (HGF) is a biomarker as known to promote cell proliferation, motility, and invasion in various human malignancies. But the correlation with cytoplasmic HGF and ESCC has been unclear in details. Methods We studied the correlation of HGF expression in ESCC tumor cells from 83 ESCC patients who were operated in our hospital using immunohistochemistry. Results High cytoplasmic HGF expression was detected in 50.6 % (42/83) of ESCC cases examined. HGF immunoreactivity was also focally detected in some cancer-associated fibroblasts. High HGF expression group was significantly correlated with lymph node metastasis (P = 0.029) and tumor differentiation (P = 0.018). Increased HGF immunoreactivity was also correlated with clinicopathological features associated with invasiveness of carcinoma cells (lymphatic invasion, venous invasion, distant metastasis, and pathological stage) but not with actual clinical outcome of the patients. Conclusions Results of our present study indicated that HGF cytoplasmic expression in ESCC was associated with increased potential for lymph node metastasis and carcinoma differentiation. These findings indicated that endogenous HGF did play an important role in progression and invasion of ESCC via c-Met/HGF autocrine loop together with HGF paracrine mechanisms.Esophagus 04/2014; · 0.83 Impact Factor