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A case of schwannoma with increased serum level of 5-S-cysteinyldopa Satoshi Okimoto 1 , Yoshiaki Kiuchi 1 1Dept of Ophthalmol and Vis Sci,Grad Sch of Biomed Sci,Hiroshima Univ pp.289-294
Published Date 2011/3/15
DOI https://doi.org/10.11477/mf.1410103567
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Abstract. Purpose:To report a case of malignant conjunctival melanoma who showed elevated level of 5-S-cysteinyldopa after resection that normalized after resection of mediastinal schwannoma. Case:A 59-year-old female presented with enlargement of pigment patch in her left eye that had appeared 18 years before. Findings:Her left eye showed pigmentation surrounding and invading the cornea. Biopsy led to the diagnosis of malignant melanoma. Clinical signs were absent suggestive of systemic metastasis. The melanoma was resected one month later. Serum level of 5-S-cysteinyldopa was within normal limits initially and increased to 29.3 nmol/l 14 months later followed by detection of mediastinal tumor. Resection of part of right lung and mediastinum led to the diagnosis of schwannoma and bronchioalveolar carcinoma of the lung. Level of 5-S-cysteinyldopa rapidly returned to normal value. Conclusion:The presenet case shows the possibility that 5-S-cysteinyldopa is produced from mediastinal schwannoma in the present case.


Copyright © 2011, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1308 印刷版ISSN 0370-5579 医学書院

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