Terence K. Tan

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PURPOSE The Intergroup 00-99 Trial for nasopharyngeal cancer (NPC) showed a benefit of adding chemotherapy to radiotherapy. However, there were controversies regarding the applicability of the results to patients in endemic regions. This study aims to confirm the findings of the 00-99 Trial and its applicability to patients with endemic NPC. PATIENTS AND(More)
PURPOSE To compare the benefit achieved by concurrent chemoradiotherapy (CRT) and/or accelerated fractionation (AF) vs. radiotherapy (RT) alone with conventional fractionation (CF) for patients with T3-4N0-1M0 nasopharyngeal carcinoma (NPC). METHODS AND MATERIALS All patients were irradiated with the same RT technique to > or =66 Gy at 2 Gy per fraction,(More)
BACKGROUND Endemic nasopharyngeal carcinoma (NPC) commonly metastasizes to the lungs, liver, and bones. This study aims to assess the efficacy of 4 distant metastasis staging modalities, namely (1) conventional work-up comprising chest X-ray, liver ultrasound, and skeletal scintigraphy, (2) CT of the thorax, abdomen, and skeletal scintigraphy, (3)(More)
PURPOSE To compare survival, tumor control, toxicities, and quality of life of patients with locally advanced nasopharyngeal carcinoma (NPC) treated with induction chemotherapy and concurrent chemo-radiation (CCRT), against CCRT alone. PATIENTS AND METHODS Patients were stratified by N stage and randomized to induction GCP (3 cycles of gemcitabine 1000(More)
BACKGROUND AND PURPOSE To evaluate the therapeutic benefits by adding chemotherapy (+C) and/or accelerated-fractionation (AF) for patients with T3-4N0-1M0 nasopharyngeal carcinoma. MATERIALS AND METHODS From 1999 to 2004, 189 eligible patients were randomized to one of four treatment groups (CF/CF+C/AF/AF+C). The number of fractions/week was 5 for the CF(More)
BACKGROUND AND PURPOSE We sought to evaluate the nature and frequency of late toxicities in a cohort of nasopharyngeal cancer (NPC) patients treated with conventional radiotherapy alone. METHODS AND MATERIALS Seven-hundred and ninety-six consecutive NPC patients treated using conventional radiotherapy at a single center from 1992 to 1995 were(More)
BACKGROUND The current standard treatment for locoregionally advanced nasopharyngeal carcinoma (NPC) was conventional-fractionation radiotherapy plus concurrent-adjuvant chemotherapy as recommended by the Intergroup-0099 Study. This combined analysis of the NPC-9901 and the NPC-9902 Trials aims to provide more comprehensive data to evaluate the efficacy of(More)
BACKGROUND Over-expression of cyclooxygenase-2 (COX-2) enzyme has been reported in nasopharyngeal carcinoma (NPC). However, the prognostic significance of this has yet to be conclusively determined. Thus, from our randomized trial of radiation versus concurrent chemoradiation in endemic NPC, we analyzed a cohort of tumour samples collected from participants(More)
Anterior visual pathway cavernous malformations (CM) are rare diagnoses with poorly-defined natural history and management. A systematic review of all reports of anterior visual pathway CM was performed to identify all English-language articles with histopathologically-proven anterior visual pathway CM published from 1950 to December 2013. Patient(More)
BACKGROUND Treatment of locoregionally recurrent nasopharyngeal carcinoma (NPC) is challenging because of prior radiotherapy, morbidities from disease recurrence, and limited therapeutic options available. METHODS A retrospective study of patients with locoregionally recurrent NPC. RESULT Between March 1994 and December 1999, there were 42 patients;(More)