title: An Atypically Large, Free-Floating Thrombus Extending From the Lung to the Left Atrium via a Pulmonary Vein: A Case Report.
abstract: An atypically large, free-floating thrombus extending from primary pulmonary malignancy into the left atrium (LA) is a rare phenomenon. Here, we report a 61-year-old man presenting with a large mass in the lower lobe of the left lung, extending to LA via the left inferior pulmonary vein.The thrombus remained clinically silent and was detected by computed tomography (CT) and transthoracic echocardiography. To prevent life-threatening complications including systemic embolism and sudden death, the patient underwent surgical excision of the mass under cardiopulmonary bypass. Pathology of the tumor and the embolus was confirmed as moderately differentiated squamous cell carcinoma. Furthermore, immunohistochemical studies demonstrated consistency of the tumor cells in this pathological category.The patient tolerated the surgery well and his condition began to improve gradually after the operation.
authors.affiliation: From the Department of Thoracic Surgery (WW, XL, WS, CY, LS, JL, FW, JL, PZ) and Department of Ultrasound (YZ), PLA Navy General Hospital, Beijing, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.forename: Xuechang
authors.initials: X
authors.lastname: Li
authors.forename: Weian
authors.initials: W
authors.lastname: Song
authors.forename: Yunshan
authors.initials: Y
authors.lastname: Zhang
authors.forename: Caiying
authors.initials: C
authors.lastname: Yue
authors.forename: Liqun
authors.initials: L
authors.lastname: Shang
authors.forename: Jun
authors.initials: J
authors.lastname: Li
authors.forename: Feng
authors.initials: F
authors.lastname: Wen
authors.forename: Junqiang
authors.initials: J
authors.lastname: Liu
authors.forename: Peng
authors.initials: P
authors.lastname: Zha
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000150:complications* / Q000175:diagnosis; D006325:Heart Atria; D006801:Humans; D008175:Lung Neoplasms / Q000150:complications* / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D011667:Pulmonary Veins; D013927:Thrombosis / Q000175:diagnosis* / Q000209:etiology