title: Case report 651: Thrombosed, leaking popliteal aneurysm.
abstract: A thrombosed, leaking aneurysm of the popliteal artery, mimicking a soft tissue sarcoma both clinically and by MRI examination, is described. It may be difficult to separate a leaking, thrombosed aneurysm from an inflammatory response secondary to a sarcoma with intralesional hemorrhage. An aneurysm should, however, be considered in the differential diagnosis if the mass is present in a well-recognized location for aneurysm and is associated with vascular engulfment and signs of subacute or chronic hemorrhage.
authors.affiliation: Department of Radiology, St. Louis University Medical Center, Missouri 63110-0250.
authors.forename: W
authors.initials: W
authors.lastname: Bilotta
authors.forename: H
authors.initials: H
authors.lastname: Walker
authors.forename: D J
authors.initials: DJ
authors.lastname: McDonald
authors.forename: M
authors.initials: M
authors.lastname: Sundaram
mesh_terms: D000783:Aneurysm / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011150:Popliteal Artery; D012509:Sarcoma / Q000175:diagnosis; D012983:Soft Tissue Neoplasms / Q000175:diagnosis