Malignant melanoma metastatic to the gastrointestinal tract.
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Biomedical subjects
Publications and source records attributed to S Giler.
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A cytotoxic assay for the identification of circulating lymphocytes bearing surface ferritin was performed on 100 patients with malignant disease of the breast and in 50 healthy women. Forty-five patients were found to have a subpopulation of ferritin bearing lymphocytes, and all of them proved to have Stages I and II carcinoma of the breast. No such lymphocytes were identified in normal women, and in the remaining 55 patients, 33 had benign disease of the breast, 20 had Stage III carcinoma of the breast and two had Stages I and II carc-noma of the breast. It appears that this immunodiagnostic test may provide an additional tool for the early detection of carcinoma of the breast and may have a prognostic implication.
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Peroral staining with tolonium chloride (toluidine blue) was performed in 45 patients with suspected gastric ulcer disease. During endoscopy, 19 of 21 malignant ulcers and one of 15 benign ulcers were stained. Following surgery, 18 of 21 malignant ulcers found in the surgical specimens were stained. Eleven patients with benign ulcers underwent surgery and none of these ulcers were found to be stained in the surgical specimens. Normal gastric mucosa and areas of gastritis appeared unchanged. The data suggest that tolonium chloride staining prior to endoscopy or surgery seems to be helful in differentiating between minute benign and malignant gastric ulcers.
Xanthine oxidase (XO) activity was found to be negligible in sterile human urines (less than 480 units, as presently defined, per litre). Significant XO activity was found in all urines containing more than 10(5) bacteria/ml, except for urines infected with Staphylococcus aureus, in which XO activity ranged from 347 to 714 units per litre. Plasma XO is not transferred to the urine, as demonstrated by the negligible XO activity found in sterile urines from patients with raised plasma XO activity. Determination of urinary XO activity is a suitable procedure for the detection of urinary tract infection.
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Halothane, but not methoxyflurane, was found to cause specific hepatocellular damage, the hepatotoxicity being prompt but transient. The hepatotoxicity was demonstrated by the elevation in the serum activity of xanthine oxidase, a highly sensitive marker for acute liver damage.
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The activity of serum xanthine oxidase, an enzyme mainly found in the liver, was determined in a random series of patients who underwent abdominal surgery of varying severity. Enzyme activity rose markedly on completion of operation in almost all patients undergoing biliary tract and gastric surgery, but not in those undergoing surgery of other abdominal organs, Serum glutamic oxaloacetic transaminase level rose to a smaller degree and in a smaller proportion of the patients. Elevation of the serum level of both enzymes following biliary and gastric surgery reflects hepatocellular damage caused by surgical trauma to the liver.
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Serum xanthine oxidase activity was measured by a radiochemical method in 137 consecutive patients with jaundice of varying etiology and in 40 non-jaundiced patients with liver or other disease. Serum xanthine oxidase was markedly increased, up to 50 times the upper normal limit (mean + 2 S.D.), in 32 out of 34 patients with infectious hepatitis. A slight elevation of serum xanthine oxidase, up to twice the upper normal limit, was found in 2 out of 49 patients with extrahepatic obstructive jaundice and in 4 out of 20 patients with chronic renal failure. In comparison to serum glutamic-oxaloacetic transaminase and lactate dehydrogenase serum xanthine oxidase appeared to be the more sensitive and specific indicator of acute hepatocellular damage.
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