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Epithelioid sarcoma presenting as pulmonary cysts with cancer antigen 125 expression

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Title: Epithelioid sarcoma presenting as pulmonary cysts with cancer antigen 125 expression
Other Titles: A Case of Pulmonary Metastasis of Epithelioid Sarcoma Presenting as Pulmonary Cysts with CA125 Expression
Authors: KIKUCHI, Eiki Browse this author
KINOSHITA, Ichiro Browse this author
YAMAZAKI, Koichi Browse this author
ITOH, Tomoo Browse this author
SHIMIZU, Tadamichi Browse this author
SHIMIZU, Hiroshi Browse this author →KAKEN DB
NISHIMURA, Masaharu Browse this author
Keywords: epithelioid sarcoma
pulmonary metastasis
pulmonary cyst
Issue Date: Nov-2006
Publisher: Blackwell Publishing
Journal Title: Respirology
Volume: 11
Issue: 6
Start Page: 826
End Page: 829
Publisher DOI: 10.1111/j.1440-1843.2006.00925.x
PMID: 17052316
Abstract: A 39-year-old Japanese woman presented with a swollen right hand and a right-sided pneumothorax. Chest CT revealed bilateral multiple pulmonary thin-walled cysts measuring ≤1 cm in diameter and small nodules. An initial skin biopsy led to a misdiagnosis of metastatic adenocarcinoma, as tumour cells were positive for cytokeratin, epithelial membrane antigen, carcinoembryonic antigen and cancer antigen 125. However, chemotherapy proved ineffective, and the skin biopsy was repeated. A final diagnosis of epithelioid sarcoma (ES) was made. Open lung biopsy showed that the pulmonary nodules represented metastases of ES. Although the pulmonary cyst walls did not contain tumour cells, bronchiolar wall adjacent to the cysts had been infiltrated by tumour cells. These findings suggested that pulmonary cysts, a rare form of pulmonary metastases from soft tissue sarcomas, had developed through a ball-valve effect of metastatic tumour in small airways. However, presence of cancer antigen 125 hindered obtaining a correct diagnosis of ES.
Rights: The definitive version is available at
Type: article (author version)
Appears in Collections:北海道大学病院 (Hokkaido University Hospital) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 菊地 英毅

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