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At least 91 records · Page 5Linked to original sources
PubMed1984

[Rhythm of diurnal and seasonal urine excretion in calcium oxalate-urinary calculi patients and healthy humans and its effect on the incidence of calculi].

Distinct sinus-like variations in the production of urine - with regard to diurnal as well as seasonal rhythms - result in an increased risk of stone formation in the months of May, June, September and November (concerning seasonal rhythm) and between midnight and 6 a.m. (concerning diurnal rhythm). Other data of importance influencing urinary excretion are sex, age and supply of fluid.

Adolescent↗
PubMed1990

[X-ray diffraction study of biliary calculi. Morphological and composition correlations of calculi].

In this study, we examined the composition of crystallographic structure of biliary stones in 106 patients (27 male, 79 female). The material has been obtained following cholecystectomy. In 70 cases (66%), the monohydrate cholesterol was the main constituent, alone (33%) or in combination with calcium salts (32%). In 52% of the cases, we found presence of vaterite, aragonite and calcite. The anhydrous cholesterol was determined in 28 subjects (26%), alone (9.4%) or associated with calcium salts (16%). Cholesterol was completely absent in 8 cases: of them, 4 presented an aspecific diffrattografic picture and 4 revealed presence of calcium carbonate. Finally, no correlation was found between epidemiological data (sex or age) and macroscopic feature of biliary stones (chemical and morphological structure).

Calcium↗
PubMed1994

[Spectroscopic analysis of biliary calculi: correlations of the type of calculi and clinical data of 25 consecutive surgical patients].

The Authors considering cholelithiasis as an heterogenic pathological entity report their experience of 25 surgical consecutive patients: 20 with cholesterol or combination gallstones and 5 with black pigmented gallstones. In this series the most frequent factors associated with cholesterol gallstones were LDL hypercholesterolemia and hypertriglyceridemia; while the most frequent factors associated with black pigmented gallstones were hepatopathies. The most frequent symptom was dyspepsia. Only the black pigmented and the mixed gallstones were associated with jaundice and pancreatitis. According to the Literature infection is associated to brown pigment gallstones in 95% of cases, in this series infection is rarely associated with other types of gallstones. Treatment with oral bile salts is useful only in pure cholesterol gallstones, so the distinction among different types of gallstones is useful not only for a better knowledge of their pathogenesis but also for a correct choice of the therapeutic options.

Aged↗