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Biomedical subjects

A Ban

Publications and source records attributed to A Ban.

At least 55 records · Page 3Linked to original sources
PubMedDate not supplied

[Echographic differential diagnosis in oculo-orbital tumors].

Within the period October 1987-September 1990, the authors submit 130 patients to clinical examination and ultrasonography the latter performed by adapting commercially available ultrasonograph type Bruel and Kjaer 3405 and Shimasonic. Among the investigated individuals, 25 exhibited oculo-orbital tumours of various types. The cases are assessed considering the following for establishing the diagnosis: clinical examination, ultrasonography, fluorescein angiography, radiotracer and morphopathological examinations. Besides the use an adapted device, the authors propose a simple and fast morphopathological method: the fixation in formaldehyde solution as long as 48 hours.

Diagnosis, Differential↗
PubMedDate not supplied

Biochemical changes induced by Campylobacter pylori in the gastric juice.

The biochemical changes induced in the gastric juice by the presence of Campylobacter pylori (CP) were followed up in 151 patients with various gastric and duodenal diseases. The diagnosis of CP infection was made by the urease test. In the presence of CP urea decreased in the gastric juice and ammonia increased. The sialic acid, fucose and hexoses, glucide components of the mucus glycoproteins dissolved in the gastric juice, underwent no change in the presence of CP. The hexosamines in the gastric mucus increased significantly in CP patients. Urease activity is present in the gastric juice even in the absence of CP, probably due to other microorganisms present in the human stomach. This does not exclude the use of the urease test for the diagnosis of CP infection. However the test can only be used in the bioptically removed gastric mucosa samples, not in the gastric juice.

Biopsy↗
PubMedDate not supplied

[Campylobacter pylori infection in chronic gastritis and gastric cancer].

The present paper analyses, in correlation with histologic lesions, the incidence of infection with Campylobacter pylori (CP) in patients with chronic gastritis, operated stomach, gastric neoplasm and healthy subjects. In chronic gastritis, incidence of infection with CP is 71.6%, significantly increased in comparison with the controls, in whom the positive percentage is 37.5. The most of the patients in this group suffered from superficial chronic gastritis. In the group with operated stomach, the CP infection included 48% of the patients studied; all had superficial chronic gastritis. In gastric cancer, CP bacteria appeared in 50% of cases. CP may represent a pathogenetic ring that starts the gastric process.

Biopsy↗
PubMedDate not supplied

Campylobacter pylori infection in gastric and duodenal ulcer.

The incidence of infection with Campylobacter pylori (CP) in gastric ulcer (GU) and duodenal ulcer (DU) and its correlation with the gastritis lesions associated to the two diseases, was investigated. In GU the incidence of CP infection was 76.3%, close to that in DU (71.4), but different from controls (33.3%). Chronic gastritis associated to gastric or duodenal ulcer is of variable severity, CP infection being the more often encountered the higher the severity of gastritis. Presence of CP was also observed in 75% of the cases associated also with intestinal metaplasia from UG. The diameter of CP-positive GU was significantly increased as compared with that in CP-negative GU. Type I GU was associated with CP infection in 81.8% of the cases. The results obtained allowed the conclusion that in GU and DU the incidence of CP infection is significantly higher as compared with that in controls but the pathogenetic relationship ulcer-bacterium is not yet elucidated.

Biopsy↗
PubMedDate not supplied

A necroptic study of the prevalence of cholelithiasis in liver cirrhosis.

The prevalence of cholelithiasis in liver cirrhosis was analyzed on 1320 consecutive necropsies which included 245 subjects with gallstones and 133 with liver cirrhosis. Gallstones were found in 24.8% of the cirrhotics, a prevalence significantly higher than in noncirrhotic subjects (17.8%) (p less than 0.05), and were more frequent in cirrhosis for all age-groups. The mean age of death was lower in cirrhotic than in noncirrhotic subjects (p less than 0.05). It was also lower, but without statistical significance, in cirrhotics without gallstones than in cirrhotics having gallstones. The ratio between lithiasic women and men was 0.8/1 in liver cirrhosis, as compared to 1.6/1 in noncirrhotic subjects. The proportion of pigment stones was significantly increased in liver cirrhosis (47.5%) (p less than 0.02). Chronic hemolysis secondary to hypersplenism, a know lithogenic factor in liver cirrhosis, might account for the predominance of pigment stones in this disease. Other lithogenic factors could be hyperestrogenism, changes in the proportion of biliary lipids etc. Complications of gallstones occurred less frequently in cirrhotic than in noncirrhotic patients, but complications of cholecystectomy represented the cause of death in 27.2% of cirrhotics as compared to 14.0% of noncirrhotic patients (p less than 0.02). These observations argue for a conservative, non-surgical attitude towards silent or uncomplicated gallstones in cirrhotic patient.

Adolescent↗