title: False detection of left atrial thrombus by the angiographic sign of "neovascularity".
abstract: "Neovascularity" in the region of the left atrial appendage was demonstrated by coronary arteriography preoperatively in five patients with mitral valve disease and was attributed to the presence of thrombus in the left atrium. Subsequently, they underwent surgery, but thorough inspection of the left atrium did not reveal thrombus in any of the five patients. The presence of neovascularity without apparent thrombosis or false detection may be a result of tissue reaction and organization in an effort to resorb the thrombus.
authors: Department of Medicine, Grantham Hospital, Hong Kong.
authors: W H
authors: WH
authors: Chow
authors: Y T
authors: YT
authors: Tai
authors: K L
authors: KL
authors: Cheung
mesh_terms: D000328:Adult; D002114:Calcinosis / Q000000981:diagnostic imaging; D006328:Cardiac Catheterization; D017023:Coronary Angiography; D003937:Diagnosis, Differential; D006325:Heart Atria / Q000000981:diagnostic imaging*; D006801:Humans; D008875:Middle Aged; D008944:Mitral Valve Insufficiency / Q000000981:diagnostic imaging*; D008946:Mitral Valve Stenosis / Q000000981:diagnostic imaging*; D009389:Neovascularization, Pathologic / Q000000981:diagnostic imaging*; D012214:Rheumatic Heart Disease / Q000000981:diagnostic imaging; D013927:Thrombosis / Q000000981:diagnostic imaging*