title: Pulmonary metastatic gastric cancer mimicking a giant mediastinal cyst.
abstract: Cysts and cavities are common radiologic abnormalities. Pulmonary metastasis comprises a rare entity of thoracic cystic diseases. We reported a case of giant cyst at the left anterior mediastinum that was pathologically confirmed as a lung metastasis from previously resected gastric cancer. The cyst was completely removed with wedge resection of the surrounding lung through a left anterior thoracotomy. One should always keep in mind the possibility of an intrathoracic cyst near or at the mediastinal region that may originate from metastatic lesions to the lungs when patients have previous cancer history.
authors.affiliation: Division of Thoracic Surgery, Department of Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan.
authors.forename: Wun-Lin
authors.initials: WL
authors.lastname: Chen
authors.affiliation: Division of Thoracic Surgery, Department of Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan.
authors.forename: Chih-Lung
authors.initials: CL
authors.lastname: Shen
authors.affiliation: Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan.
authors.forename: Yi-Ming
authors.initials: YM
authors.lastname: Chang
authors.affiliation: Division of Thoracic Surgery, Department of Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan.
authors.forename: Chih-Ming
authors.initials: CM
authors.lastname: Hsieh
authors.affiliation: Department of Radiology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan.
authors.forename: Cheng-Kuang
authors.initials: CK
authors.lastname: Chang
authors.affiliation: Department of Radiology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan.
authors.lastname: Hsian-He-Hsu
authors.affiliation: Division of Thoracic Surgery, Department of Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan. Electronic address: tzao@yahoo.com.
authors.forename: Ching
authors.initials: C
authors.lastname: Tzao
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis / Q000556:secondary* / Q000601:surgery; D000368:Aged; D003937:Diagnosis, Differential; D016099:Endoscopy, Gastrointestinal; D005500:Follow-Up Studies; D005743:Gastrectomy; D006801:Humans; D061705:Image-Guided Biopsy; D008175:Lung Neoplasms / Q000175:diagnosis / Q000556:secondary* / Q000601:surgery; D008297:Male; D008476:Mediastinal Cyst / Q000175:diagnosis*; D011013:Pneumonectomy; D013902:Radiography, Thoracic; D013274:Stomach Neoplasms / Q000473:pathology* / Q000601:surgery; D014057:Tomography, X-Ray Computed