Aortic valvular tophus: identification by X-ray diffraction of urate and calcium phosphates.

Autor: Gawoski, J M, Balogh, K, Landis, W J
Zdroj: Journal of Clinical Pathology; Aug1985, Vol. 38 Issue 8, p873-876, 4p, 2 Black and White Photographs, 1 Chart
Abstrakt: A typical gouty tophus with birefringent, dichroic, needle shaped crystals was found in a resected calcified aortic valve on routine histological examination. The patient, an elderly man, had a long history of gout. X-ray diffraction confirmed the presence of sodium acid urate monohydrate and identified hydroxyapatite and whitlockite in the accompanying dystrophic calcification of the aortic valves. Previous reports indicate that gouty tophi of the cardiac valves are rare: of the nine cases reported, eight occurred in the mitral valve. [ABSTRACT FROM PUBLISHER]
Databáze: Complementary Index