Hisao Amatsu

The Australian Society of Otolaryngology Head & Neck Surgery, Evans Head, New South Wales, Australia

Are you Hisao Amatsu?

Claim your profile

Publications (2)1.11 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: We report a 65-year-old female case of low-grade non-intestinal type adenocarcinoma of the nasal cavity with bilateral metastases to the cervical lymph nodes(T3N2cM0: Stage IV A). Chemoradiotherapy administered as first-line therapy yielded only a partial response in the primary tumor and metastatic lesions, and subsequent chemotherapy with S-1(at a dose of 80 mg per day)alone was applied as tumor dormancy therapy(TDT)on an outpatient basis. Adverse events during S-1 medication were limited to a decrease in leukocyte count and hemoglobin level, both of which were grade 1. The tumor has not enlarged, and the patient has survived 29 months since the beginning of chemotherapy with S-1 alone without any decrease in quality of life. Although the effectiveness of S-1 for adenocarcinoma of the head and neck has not been fully demonstrated, S-1 might be useful in patients with advanced head and neck adenocarcinoma for the purpose of TDT.
    Gan to kagaku ryoho. Cancer & chemotherapy 01/2009; 35(13):2389-91.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Spindle cell carcinoma (SpCC) of the tongue is a relatively rare malignancy. We treated a patient with metachronous early squamous cell carcinoma (SCC) in both margins of the tongue (right side first followed by left side). Eight years after treatment for the first SCC by surgery and radiotherapy, the second SCC occurred in the contralateral margin of the tongue. Surgical resection was performed for the second SCC, with local recurrence 8 months later associated with pathological change from SCC to SpCC. The SpCC was completely resected with wide surgical margins in combination with bilateral neck dissection. However, the patient developed pulmonary metastasis and died of respiratory failure 4 months after the final surgery. Postoperative inflammatory reaction followed by scar formation in the previously irradiated surgical site might have caused the transition from SCC to SpCC during the process of recurrence.
    Acta Oto-Laryngologica 06/2008; 128(11):1273-6. · 1.11 Impact Factor