Justification of 1997 UICC TNM classification for poorly differentiated squamous cell carcinoma of the nasopharynx.
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- MITSUHASHI Norio
- Department of Radiology and Radiation Oncology, Gunma University School of Medicine
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- EBARA Takashi
- Department of Radiology and Radiation Oncology, Gunma University School of Medicine
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- MAEBAYASHI Katsuya
- Department of Radiology and Radiation Oncology, Gunma University School of Medicine
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- SAKURAI Hideyuki
- Department of Radiology and Radiation Oncology, Gunma University School of Medicine
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- AKIMOTO Tetsuo
- Department of Radiology and Radiation Oncology, Gunma University School of Medicine
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- HAYAKAWA Kazushige
- Department of Radiology and Radiation Oncology, Gunma University School of Medicine
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- SAITO Yoshihiro
- Department of Radiology and Radiation Oncology, Gunma University School of Medicine
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- KUROSAKI Hiromasa
- Department of Radiology and Radiation Oncology, Gunma University School of Medicine
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- NIIBE Hideo
- Department of Radiology and Radiation Oncology, Gunma University School of Medicine
Bibliographic Information
- Other Title
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- 上咽頭低分化型偏平上癌新ＴＮＭ分類の問題点 旧ＴＮＭ分類との比較
- 旧TNM分類との比較
Description
The record of 59 patients with poorly-differentiated squamous cell carcinoma of the nasopharynx who were treated with radiation therapy between 1980 and 1998 were retrospectively analyzed to clarify whether 1997 UICC classification may be reasonable for suggesting the treatment outcome compared with 1987 UICC classification. Since X-CT and/or MRI were indispensable to classification of the tumor extent according to the 1997 classification, the tumors which were treated before clinical induction of these diagnostic imagings cannot be reclassified into a new stage. The number of patients who classified into the new Stage IV decreased because patients with stage IV tumor according to the 1987 classification were divided into 5 new stages; stage II b, III, IVa, IVb and IVc. Nevertheless many patients with curable tumors were classified into new stage IV. Tumor volume in lymph node was a more important prognostic factor than level of cervical lymph node metastasis. It was necessary to make a new TNM classification for nasopharyngeal cancer in due consideration of histological types and/or histological grading, because the first choice of treatment for nasopharyngeal cancer was radiation therapy and tumors which are different in natural history and radiosensitivity can appear at the nasopharynx.
Journal
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- Japanese jornal of Head and Neck Cancer
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Japanese jornal of Head and Neck Cancer 25 (3), 433-437, 1999
Japan Society for Head and Neck Cancer
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Keywords
Details 詳細情報について
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- CRID
- 1390282679705057408
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- NII Article ID
- 130004166700
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- ISSN
- 18839878
- 09114335
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- OpenAIRE
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- Abstract License Flag
- Disallowed
