title: A case of pulmonary sarcoma with significant extension into the right lung.
abstract: A female patient in her 30s was referred to us with a mass approximately 8 centimeters in diameter in right lung segment 6. Bronchoscopy was done, and a tumorous lesion obstructing right B6 was found. Biopsy of this lesion supported suspicions of sarcoma or spindle cell carcinoma. Contrast-enhanced CT showed that the mass extended to and obstructed the right main pulmonary artery. A skip lesion was also suspected in the periphery of pulmonary artery trunk. The tumor was removed by right pneumonectomy accompanied by resection of the main and left pulmonary arteries under cardiopulmonary bypass. The pulmonary artery trunk and the left pulmonary artery were reconstructed with a vascular graft. Collectively, intimal sarcoma originating from the right main pulmonary artery with extension into the right lung was diagnosed. Significant extension of pulmonary artery sarcoma into the lung, as was observed in the present case, is considered to be rare, and to our knowledge this is the first report in which the primary lesion was biopsied by bronchoscopy.
authors.affiliation: Department of General Thoracic Surgery, Saitama Medical Center, Saitama Medical University, 1981 Kamoda, Kawagoe, Saitama 350-8550, Japan.
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Inoue
authors.affiliation: Department of General Thoracic Surgery, Saitama Medical Center, Saitama Medical University, 1981 Kamoda, Kawagoe, Saitama 350-8550, Japan.
authors.forename: Yotaro
authors.initials: Y
authors.lastname: Izumi
authors.affiliation: Department of Cardiovascular Surgery, Saitama Medical Center, Saitama Medical University, Saitama 350-8550, Japan.
authors.forename: Kenjiro
authors.initials: K
authors.lastname: Sakaki
authors.affiliation: Department of Pathology, Saitama Medical Center, Saitama Medical University, Saitama 350-8550, Japan.
authors.forename: Keiko
authors.initials: K
authors.lastname: Abe
authors.affiliation: Department of Pathology, Saitama Medical Center, Saitama Medical University, Saitama 350-8550, Japan.
authors.forename: Teruaki
authors.initials: T
authors.lastname: Oka
authors.affiliation: Department of Pathology, Saitama Medical Center, Saitama Medical University, Saitama 350-8550, Japan.
authors.forename: Jun-Ichi
authors.initials: J
authors.lastname: Tamaru
authors.affiliation: Department of General Thoracic Surgery, Saitama Medical Center, Saitama Medical University, 1981 Kamoda, Kawagoe, Saitama 350-8550, Japan.
authors.forename: Ato
authors.identifier: 0000-0001-6356-977X
authors.initials: A
authors.lastname: Sugiyama
authors.affiliation: Department of General Thoracic Surgery, Saitama Medical Center, Saitama Medical University, 1981 Kamoda, Kawagoe, Saitama 350-8550, Japan.
authors.forename: Kohei
authors.initials: K
authors.lastname: Aoki
authors.affiliation: Department of General Thoracic Surgery, Saitama Medical Center, Saitama Medical University, 1981 Kamoda, Kawagoe, Saitama 350-8550, Japan.
authors.forename: Hiroki
authors.initials: H
authors.lastname: Fukuda
authors.affiliation: Department of General Thoracic Surgery, Saitama Medical Center, Saitama Medical University, 1981 Kamoda, Kawagoe, Saitama 350-8550, Japan.
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Gika
authors.affiliation: Department of Cardiovascular Surgery, Saitama Medical Center, Saitama Medical University, Saitama 350-8550, Japan.
authors.forename: Kazuhito
authors.identifier: 0000-0002-4586-8861
authors.initials: K
authors.lastname: Imanaka
authors.affiliation: Department of General Thoracic Surgery, Saitama Medical Center, Saitama Medical University, 1981 Kamoda, Kawagoe, Saitama 350-8550, Japan.
authors.forename: Mitsuo
authors.initials: M
authors.lastname: Nakayama