顎下部に発生した多形腺腫由来癌の1例

This report describes a case of carcinoma ex pleomorphic adenoma originating from a recurrent pleomorphicadenoma in a 67-year-old woman. She was referred to our department because of a swelling in the rightcervical region. At presentation, a painless elastic hard tumor measuring 40 X 30mm was locate...

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Published in日本口腔外科学会雑誌 Vol. 55; no. 8; pp. 424 - 427
Main Authors 堀, 信介, 山田, 理浩, 西田, 光男, 安田, 真也, 木下, 浩二, 東郷, 由弥子
Format Journal Article
LanguageJapanese
Published 社団法人 日本口腔外科学会 20.08.2009
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ISSN0021-5163
2186-1579
DOI10.5794/jjoms.55.424

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Summary:This report describes a case of carcinoma ex pleomorphic adenoma originating from a recurrent pleomorphicadenoma in a 67-year-old woman. She was referred to our department because of a swelling in the rightcervical region. At presentation, a painless elastic hard tumor measuring 40 X 30mm was located in the right sideof the upper neck. Computed tomography and magnetic resonance imaging showed enhancement of a nodule and a segmentedmass. The biopsy diagnosis was a carcinoma ex pleomorphic adenoma. A radical neck dissection, including the tumor, was performed. Histological examination revealed a rare undifferentiatedcarcinoma. The final diagnosis was a carcinoma ex pleomorphic adenoma because the patient had previouslyundergone a resection of a ipsilateral submandibular pleomorphic adenoma showing atypia and intracapsularinvasion. There has been no sign of recurrence or metastasis for 4 years 8 months postoperatively.
ISSN:0021-5163
2186-1579
DOI:10.5794/jjoms.55.424