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Science 10 July 1970:
Vol. 169. no. 3941, pp. 183 - 184
DOI: 10.1126/science.169.3941.183
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Articles

Calcium Oxalate: Crystallographic Analysis in Solid Aggregates in Urinary Sediments

Fernando Catalina 1 and Luis Cifuentes 2

1 Instituto de Optica, Serrano 121, Madrid, Spain
2 Clínica Médica N. S. Concepción, Fundación Jiménez Díaz, Madrid

A relationship between crystallographic structure and morphological form of calcium oxalates in urinary sediments is established. The common tetragonal bipyramids have been confirmed as weddellite from their electron diffraction patterns. Other solid forms, such as needles, biconcave disks, and dumbbell forms, that can appear in hyperoxalurias, of both metabolic and alimentary origin, have been identified as whewellite. Micrographs reveal fibrous structure on those whewellite polycrystalline aggregates.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Calcium Oxalate Microcrystalline-Associated Arthritis in End-Stage Renal Disease.
G. S. HOFFMAN, H. R. SCHUMACHER, H. PAUL, V. CHERIAN, R. REED, A. G. RAMSAY, and W. A. FRANCK (1982)
Ann Intern Med 97, 36-42
   Abstract »    PDF »
Flecked Retina: Appearance Secondary to Oxalate Crystals From Methoxyflurane Anesthesia.
J. D. Bullock and D. M. Albert (1975)
Arch Ophthalmol 93, 26-31
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