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Pulmonary Cysts as the Sole Metastatic Manifestation of Soft Tissue Sarcoma*: Case Report and Consideration of the Pathogenesis

Seiki Hasegawa, MD, FCCP; Kenji Inui, MD; Kunihiko Kamakari, MD; Yoshihiko Kotoura, MD; Kiichi Suzuki, MD; Manabu Fukumoto, MD
Author and Funding Information

*From the Department of Thoracic Surgery (Drs. Hasegawa and Inui), the Department of Pulmonology (Dr. Kamakari), and the Department of Orthopedic Surgery (Drs. Kotoura and Suzuki), Nagahama City Hospital, Nagahama, Japan; and the Department of Pathology (Dr. Fukumoto), Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan.

Correspondence to: Seiki Hasegawa, MD, Department of Thoracic Surgery, Kyoto University Hospital, 53 Shogoin, Kyoto 606-8397, Japan; e-mail: seikiha@kuhp.kyoto-u.ac.jp



Chest. 1999;116(1):263-265. doi:10.1378/chest.116.1.263
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A 29-year-old woman with an unusual form of pulmonary metastasis from epithelioid sarcoma of the right forearm is presented. Since she manifested left pneumothorax due to metastatic pulmonary cyst 7 years ago, the only metastatic manifestation has been the presence of bilateral multiple thin-walled pulmonary cysts; no other types of pulmonary lesions, such as nodules, cavitary lesions with thick or irregular walls, or extrapulmonary metastases, have been found. Pathologic studies revealed metastatic proliferation of sarcoma cells in the wall of the pulmonary cysts and infiltration of malignant cells inside the microscopic cavitary metastases surrounded by normal lung parenchyma.

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