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Journal Article
Research Support, Non-U.S. Gov't
Review
A proposed modification of the Ho stage-classification for nasopharyngeal carcinoma.
Radiotherapy and Oncology 1991 May
Based on the clinical data of a retrospective study of 659 NPC patients with routine computed tomography of the nasopharyngeal region, a refinement of Ho's stage-classification for NPC is proposed with reduction in the number of overall stages without sacrificing the accuracy in predicting prognosis in the short term. Classifying the cervical lymph nodal metastasis into supraclavicular (Ho's N3) and above supraclavicular (Ho's N1 + N2) and the nasopharyngeal primary into early (Ho's T1 + T2n + T20) and advanced (Ho's T2p + T3 + T3p) forms the conceptual backbone of the present proposed modification of the original Ho stage-classification. Power in predicting the occurrence of distant metastases and the local failures has been enhanced by the proposed T-stage and N-stage re-grouping. Retrospective comparison between Ho's and the UICC stage-classifications showed a more even patients number distribution among the overall stages and a greater power in predicting NPC prognosis for the former. Prospective studies to compare the value of the different stage-classifications are required for recommendation of a single classification for general acceptance to facilitate comparison of treatment results between centres.
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