Keiji Hayashi

Learn More
PURPOSE To assess the quality of life (QOL) of oral cancer patients treated with low-dose-rate interstitial brachytherapy (LDR-BT) alone. METHODS AND MATERIALS Between June 2005 and July 2006, a total of 56 patients with oral cancer were enrolled in this prospective study. QOL was assessed by means of the core questionnaire and head and neck questionnaire(More)
External beam radiotherapy is a potential salvage or adjuvant therapy after radical prostatectomy (RP). The purpose of this study was to investigate the treatment outcome of salvage radiotherapy (RT) following RP for clinically localized prostate cancer and to identify factors that may predict the outcome of salvage RT. Between 2000 and 2006, 41 patients(More)
We compared the growth rate of locally recurrent hepatocellular carcinoma (HCC) with that of primary HCC. After the first treatment by transcatheter arterial chemoembolization (TACE), 60 locally recurrent HCC nodules were reviewed. The tumor volume doubling time (DT) of locally recurrent HCC was significantly shorter than that of primary HCC. The 95% lower(More)
To elucidate the local therapeutic results of computed tomography (CT)-guided transcatheter arterial chemoembolization (TACE) as initial treatment for hepatocellular carcinoma (HCC), and to verify factors which affect local therapeutic results. From 1992 to 2002, 265 tumors of 79 HCC patients were treated by 139 sessions of CT-guided TACE as initial(More)
The aim of this study was to retrospectively evaluate the long-term results of transcatheter arterial chemoembolization (TACE) for the treatment of local recurrence of hepatocellular carcinoma (HCC) after the first TACE. Between September 1992 and October 2004, 85 recurrent HCC nodules of 35 patients were treated by TACE. During the median follow-up period(More)
OBJECTIVE To examine the epidemiological association between sudden deterioration leading to death and Tamiflu use. DESIGN Proportional mortality study. SETTING Japan. PARTICIPANTS 162 deaths without deterioration before the first consultation among all 198 deaths of mostly confirmed 2009A/H1N1 influenza. POPULATION AT RISK: Age-specific population of(More)
PURPOSE To determine the results and long-term changes in radiation toxicity of stage I-II buccal mucosa cancer patients treated by low-dose-rate (LDR) brachytherapy with (198)Au grains. MATERIALS AND METHODS A total of 133 stage I-II buccal mucosa carcinomas patients received (198)Au grain implantation brachytherapy between January 1982 and July 2005: 75(More)
BACKGROUND survivors of non-Hodgkin's lymphoma (NHL) are well known to be at an increased risk of second malignancies. In this study, we evaluated the incidence and clinical features of head and neck cancer (HNC) occurring after radiotherapy (RT) for NHL. MATERIALS AND METHODS We investigated the clinical records of 322 patients who had received RT for(More)
PURPOSE The authors analyzed the correlation between radiotherapy doses at reference points on the uterine edge and the rectal wall and both pelvic control and late rectal complications of cervical cancer therapy. METHODS AND MATERIALS Between 1997 and 2005, 57 patients with Stages IB-IVA cancer of uterine cervix were treated with a combination of(More)
PURPOSE To analyze data from patients receiving repeat brachytherapy (re-BT) for the treatment of residual or recurrent tumor in the oral cavity. METHODS AND MATERIALS Between January 2003 and December 2007, 62 patients who had undergone definitive BT as an initial treatment of oral cancer subsequently underwent re-BT for the treatment of residual or(More)