title: Pulmonary artery sarcoma presenting as an isolated lung mass.
abstract: We report a very rare case of pulmonary artery sarcoma that presented as an isolated lung mass, which we attempted to resect via lobectomy, although this resulted in incomplete resection due to unnoticed latent proximal presentations. A 54-year-old man complained of a dry cough that had persisted for 2 months. Enhanced chest computed tomography revealed a lobular mass in his left lower lobe. Therefore, left lower lobectomy was performed as a radical surgery, and the tumor was ultimately diagnosed as pulmonary artery sarcoma. However, follow-up computed tomography at 16 months revealed proximal presentations in the pulmonary trunk and right pulmonary artery, which we retrospectively discovered were present before the surgery. This case highlights the importance of evaluating the lumen of the pulmonary artery, to accurately determine the required extent of any radical surgery, even in cases of pulmonary artery sarcoma that presents as an isolated lung mass.
authors.affiliation: Department of Thoracic Surgical Oncology, Cancer Institute Hospital, Japanese Foundation for Cancer Research, 3-8-31, Ariake, Koto, Tokyo, 135-8550, Japan. shoheijapan@jikei.ac.jp.
authors.forename: Shohei
authors.initials: S
authors.lastname: Mori
authors.affiliation: Department of Thoracic Surgical Oncology, Cancer Institute Hospital, Japanese Foundation for Cancer Research, 3-8-31, Ariake, Koto, Tokyo, 135-8550, Japan.
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Uehara
authors.affiliation: Department of Pathology, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan.
authors.forename: Noriko
authors.initials: N
authors.lastname: Motoi
authors.affiliation: Department of Thoracic Surgical Oncology, Cancer Institute Hospital, Japanese Foundation for Cancer Research, 3-8-31, Ariake, Koto, Tokyo, 135-8550, Japan.
authors.forename: Sakae
authors.initials: S
authors.lastname: Okumura
mesh_terms: D001706:Biopsy; D003937:Diagnosis, Differential; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis*; D008297:Male; D011013:Pneumonectomy; D011651:Pulmonary Artery; D012509:Sarcoma / Q000175:diagnosis* / Q000601:surgery; D014057:Tomography, X-Ray Computed; D019043:Vascular Neoplasms / Q000175:diagnosis* / Q000601:surgery
keywords: Lung mass; Pulmonary artery; Pulmonary artery sarcoma