@article{oai:nagasaki-u.repo.nii.ac.jp:00021874,
 author = {Kose, Noriyuki and Ikeda, Takayoshi and Shimokawa, Isao and Nagai, Kazuhiro and Kinoshita, Shingo and Izumikawa, Kinichi and Matsuo, Takeshi},
 issue = {2-4},
 journal = {Acta medica Nagasakiensia},
 month = {Dec},
 note = {A case of carcinosarcoma, a rare polypoid tumor of the esophagus is presented. The characteristic gross and microscopic features as well as a discussion of the histogenesis of the sarcomatous elements are presented by microscopic, immunohistochemical and electron micronscopic examinations. Immunohistochemically, keratin and EMA (epithelial membrane antigen) were demonstrated in the islands of squamous cell carcinoma within the sarcomatous elements and in the carcinoma in situ at the border of normal mucosa. Vimentin, desmin, actin, myoglobin, factor VIII, S-100 protein, NSE, neuraminidase were not demonstrated in both the carcinomatous and the sarcomatous elements except for a positive reactivity to a-1-antichymotrypsin in the sarcomatous elements at part. It is suggested that the sarcomatous elements are of epithelial origin based on the facts as follows : 1 transition from overlying epithelium or carcinomatous islands to sarcomatous elements existent ; 2 some small tubules were formed within the sarcomatous elements, which showed transition into the sarcomatous elements ; and 3 a part of the sarcomatous elements revealed either positive or weak reactivity to keratin and EMA. Further, weak reactivity to keratin and EMA in the more anaplastic lesion may reflect the lack of tonofilaments and desmosomes in the ultrastructural findings., Acta medica Nagasakiensia. 1989, 34(2-4), p.149-158},
 pages = {149--158},
 title = {An Autopsy Case of Carcinosarcoma of the Esophagus},
 volume = {34},
 year = {1989}
}