title: "Masson's pseudoangiosarcoma" in a popliteal aneurysm: tumor or thrombus? Cause or effect?
abstract: A 44-year-old male presented to our vascular surgery unit with a partially thrombosed 22 mm popliteal aneurysm giving rise to progressive distal ischemia. Microscopy of embolus retrieved from the posterior tibial artery at bypass surgery revealed the unexpected finding of intravascular papillary endothelial hyperplasia (Masson's pseudoangiosarcoma).
authors.affiliation: Departments of Vascular Surgery, Northampton General Hospital, Cliftonville, Northampton, UK. gregmcmahon@hotmail.com
authors.forename: Greg S
authors.initials: GS
authors.lastname: McMahon
authors.forename: Hany M S
authors.initials: HM
authors.lastname: Mikhail
authors.forename: Angus J
authors.initials: AJ
authors.lastname: Molyneux
authors.forename: Davis V
authors.initials: DV
authors.lastname: Thomas
authors.forename: Robert C J
authors.initials: RC
authors.lastname: Hicks
mesh_terms: D000328:Adult; D000783:Aneurysm / Q000150:complications* / Q000000981:diagnostic imaging / Q000473:pathology / Q000628:therapy; D004617:Embolism / Q000209:etiology / Q000628:therapy; D004730:Endothelium, Vascular / Q000473:pathology* / Q000601:surgery; D006394:Hemangiosarcoma / Q000150:complications* / Q000473:pathology / Q000628:therapy; D006801:Humans; D006965:Hyperplasia; D008297:Male; D011150:Popliteal Artery / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D011859:Radiography; D012501:Saphenous Vein / Q000637:transplantation; D015912:Thrombolytic Therapy; D013927:Thrombosis / Q000150:complications* / Q000000981:diagnostic imaging / Q000473:pathology / Q000628:therapy; D016909:Tibial Arteries / Q000601:surgery; D016896:Treatment Outcome; D019043:Vascular Neoplasms / Q000150:complications* / Q000473:pathology / Q000628:therapy; D014656:Vascular Surgical Procedures