Biomedical subjects

A Bajtai

Publications and source records attributed to A Bajtai.

15 recordsLinked to original sources

PubMed1992

[Clinical pathology of gastric mucosal dysplasia].

The stomach cancer develops on dysplastic lesions of gastric mucosa. It can be found in every precancerous condition, as chronic gastritis, gastric adenoma, giant rugal hypertrophy, chronic peptic ulcer, gastric stump after partial resection, pernicious anaemia. So, this dysplastic change is not a specific lesion. Different classifications are known for grading of gastric dysplasia. Authors evaluated them compared with each other. The signs of dysplasia were studied in 306 gastric aimed biopsy specimens from 233 patients between 1979-1990. In this material severe dysplasia occurred in 20.6%. It means a frequency of 0.84% regarding all gastric endoscopies in the same period of time. The endoscopic investigation revealed a protruded lesion in 18.5% and excavated one in 45.9%. What is very important, local change could not be detected in 35.6%. Follow-up study could be performed in 49 patients in a period of 1-7 years. In this group cancer developed in five patients. By the other hand, 22 gastric carcinomas were proved amongst 233 patients. The authors' recommendation is to follow-up the patients bearing gastric dysplasia at least during 10 years after the diagnosis.

Diagnosis, Differential↗

PubMed1992

[Diagnostic possibilities of endoscopic ultrasonography in the detection of gastric cancer].

After conventional gastroscopy and biopsy the endoscopic ultrasonography (EUS) was performed in 115 patients with gastric ulcer and carcinoma. The markers of benignity and malignity were analyzed by EUS, and the criteria of benign and malign excavated lesions were described. On the base of endoscopic pictures 3 groups of gastric excavations were distinguished, and the recorded images of this excavations were reevaluated. Benign ultrasonic markers were detected in one case of excavated tumors, in 54% in group of ulcers with suspicion of malignity and in 82% in cases of benign ulcers. Authors evaluate the cause of overestimate. Ten cases of early gastric cancers are reported. Authors believe that the endosonographic examinations of the stomach are valuable in detecting and stating of gastric carcinoma.

Diagnosis, Differential↗

PubMed1992

[The non-ulcer dyspepsia syndrome].

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Chronic Disease↗

PubMed1990

[Tomato skin in the common bile duct after endoscopic sphincterotomy].

Lithotomy and endoscopic sphincterotomy were carried out in a 83-year-old woman because of choledocholithiasis. One year later calculi and tomato skins were found in the common bile duct. Significance is attributed to the tomato skins in the development of calculi. The attention is drawn to the observation that operative interventions performed through the Vater's papilla, spontaneous or iatrogenic choledochoduodenal fistulas create favourable conditions for foreign material to get into the choledochus and this may cause lithogenesis.

Aged↗

PubMed1990

[Esophageal and gastric candidiasis].

The authors examined the morbidity rate of mycotic diseases of stomach and esophagus. There were 746 biopsian and abrasian cytologic samplings carried out in a year and 12.3% of the cases turned out to be positive. Comparing the two sampling patterns the abrasian cytology has proved to be more effective. The prevalence of candidiasis was found to be higher in case of malignant diseases. In states accompanied by low acid values (as in case of patients under H2-receptor blocking--treatment) mycotic infection proved to be more frequent, too.

Candidiasis↗

PubMed1990

[Unity of diagnostic pathology, continuing education and research at our institute].

Authors give a brief view on the activity in Institute of Pathology and Histopathology of Post-graduate University of Medicine. In its frame, close relation of diagnostic, post-graduate education and research activity is illustrated by examples of different fields (intestinal, cardiac, vascular system, respiratory tract, organ of locomotion, urological diseases, electronmicroscopic tumor diagnostics, endocrinology). Importance of modern morphological methods and their place both in practical and scientific activity are dealt with.

Cardiovascular Diseases↗

PubMed1989

[Digestive tract tumors after gastrectomy of peptic ulcer].

In a series of 160 patients submitted to esophageal resection because of cancer, four cases were found who have been partially gastrectomized for benign stomach or duodenal ulcer decades ago (2.5%). An other similar case was detected by endoscopy and aimed biopsy. In the sixth patient, the cancer developed simultaneously in the gastric remnant and in the distal jejunum loop after partial gastrectomy of Billroth--II. type. Two esophageal cancers of the above-mentioned four resected specimens, were in the T1 stage according to TNM classification of UICC. One tumour of the later two esophageal carcinomas did not reveal any clinical sign. The patient had at the same time early invasive cancer in the gallbladder and synchronously a renal cell carcinoma in the left kidney. The main clinical symptoms of the last patient could be attributed to the gallstone disease. The esophageal carcinomas that developed after partial gastrectomy did not show any difference neither in localization, in the macro- or in the microscopical features nor in the chronic esophagitis and epithelial dysplasia in comparison with other esophageal cancer of patients who were not submitted to partial gastrectomy. Attention must be called to the significance of reflux-esophagitis which can occur with partial gastrectomy. The follow-up of such patients is doubly important if the forceps biopsy detected epithelial dysplasia in the esophagus. On the other hand, the reconstruction of HIS-angle during partial gastrectomy is very important in the prevention of reflux-esophagitis.

Esophageal Neoplasms↗

PubMed1977