Scanning electron microscopy of surgically excised human mitral valves in patients over 45 years of age.


Leaflets were obtained from 23 diseased mitral valves of patients over 45 years of age removed at the time of prosthetic valve insertion and the topography was studied with scanning electron microscopy. The clinical diagnosis in all cases was probable rheumatic heart disease. Filiform processes (Lambl's excrescences) were seen on 15 of 23 (65%) of these… (More)


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