True Malignant Mixed Tumor of the Submandibular Gland

作者: Tomoyuki Yamashita , Noriaki Kameda , Kenji Katayama , Nobuyuki Hiruta , Masahiro Nakada

DOI: 10.1111/J.1440-1827.1990.TB01552.X

关键词:

摘要: A case of true malignant mixed tumor the submandibular gland is reported. The tumor, occurring in a 52-year-old man, started to grow rapidly after long history without any change size. Surgical resection was carried out and resected measured 5.5 cm with cut surface showing solid structures. Microscopically, had both carcinomatous sarcomatous elements, former consisting poorly differentiated adenocarcinoma squamous cell differentiation latter osteosarcoma chondrosarcomatous fibrosarcomatous elements. remnant benign pleomorphic adenoma could also be identified. Immunohistochemical study demonstrated keratin epithelial membrane antigen carcinoma cells vimentin all elements osteosarcoma. It assumed from these clinical histological findings that transformed pre-existing adenoma. Acta Pathol Jpn 40: 137–142, 1990.

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