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PURPOSE To investigate the incidence and severity of rectal bleeding after high-dose hypofractionated radiotherapy (RT) for prostate cancer, and to explore the factors affecting the incidence of Grade 2 or worse rectal bleeding. METHODS AND MATERIALS The data of 52 patients who had been treated by external beam RT for localized prostate cancer between(More)
PURPOSE The aim of the study is to develop high-dose-rate (HDR) conformal interstitial brachytherapy by means of combined CT-fluoroscopy guidance with CT-based treatment planning for locally recurrent rectal carcinoma. METHODS AND MATERIALS Brachytherapy needle insertion was guided with a helical CT scanner providing continuous fluoroscopy reconstruction.(More)
PURPOSE To analyze the results of clinically node-negative, localized hormone-refractory prostate cancer treated with external beam radiotherapy (EBRT) and to investigate the potential prognostic factors that influenced the therapeutic outcome. METHODS AND MATERIALS Fifty-three patients who had developed localized hormone-refractory prostate cancer were(More)
PURPOSE To compare the efficacy and the incidence of complications of high-dose-rate (HDR) and low-dose-rate (LDR) intraluminal brachytherapy (IBT) boost after external beam radiation therapy in patients with superficial esophageal cancer. METHODS AND MATERIALS Fifty-four consecutive patients with Stage I thoracic esophageal squamous cell carcinoma who(More)
Infectious mononucleosis (IM) is an acute lymphoproliferative disorder that typically occurs in young patients and is usually caused by Epstein-Barr virus. We report here, two cases of tonsillar lesion of IM resembling marginal zone B-cell lymphoma mucosa-associated lymphoid tissue (MALT) type. The patients consisted of an 18-year-old Japanese woman and a(More)
PURPOSE Hypoxia-inducible factor-1alpha (HIF-1alpha) is an intrinsic marker of tumor hypoxia. It has been considered that the hypoxic status reduces radiosensitivity, but the role of HIF-1alpha in advanced cervical carcinoma is still unclear. The objective of this study was to clarify the impact of HIF-1alpha, human papillomavirus (HPV), and other molecular(More)
PURPOSE The impact of concurrent chemotherapy on the local control in patients with T2N0 laryngeal cancer who receive radiation therapy (RT) was evaluated. METHODS AND MATERIALS Sixty-three patients with T2N0 laryngeal cancer who were treated by definitive RT were analyzed. The primary site of the cancer was the glottis in 50 patients, the supraglottis in(More)
PURPOSE To analyze the results of radiotherapy (RT) for malignant lymphoma of the orbit and to evaluate them compared with the World Health Organization (WHO) classification published in 2001. METHODS AND MATERIALS The data from 29 patients with malignant lymphoma of the orbit treated with RT at Gunma University Hospital between 1978 and 2001 were(More)
Although it has been reported that the risk of second malignancies increases in long-term survivors of small cell lung cancer (SCLC) and late recurrence of SCLC is sometimes experienced, it seems uncommon. We recently experienced a case of redevelopment of SCLC after a long disease-free period. The case was considered to be second primary SCLC more than 10(More)
PURPOSE To investigate the dose-volume histogram parameters and clinical factors as predictors of pleural effusion in esophageal cancer patients treated with concurrent chemoradiotherapy (CRT). METHODS AND MATERIALS Forty-three esophageal cancer patients treated with definitive CRT from January 2001 to March 2007 were reviewed retrospectively on the basis(More)