두경부 원발부위 불명암에서 치료 후 발견된 비인두암
Nasopharyngeal cancer found after treatment of unknown primary cancer in the head and neck
- 대한두경부종양학회
- 대한두경부종양학회지
- 제34권 제2호
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2018.1153 - 56 (4 pages)
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DOI : 10.21593/kjhno/2018.34.2.53
- 61

Despite adequate diagnostic work-up, unknown primary carcinoma(UPC) of the head and neck cannot be detected in approximately 2- 3% of patients.(1,2) There are several explanations for a cervical metastasis in the absence of a primary tumor. Here in, we report 2 patients, who were diagnosed with nasopharyngeal cancer after treatment of unknown primary cancer of the neck. Both patients had radical neck dissections and chemoradiation therapy, but 1 patient showed nasopharyngeal cancers 4 years after treatment and the other patient at 9 months after treatment for the unknown primary cancer. Therefore, we report 2 cases of nasopharyngeal cancer, which were diagnosed after treatment of unknown head and neck primary site.
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