Condyloma acuminatum of the bladder in a patient with AIDS: radiological findings.
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AIDS-Related Opportunistic Infections↗
Biomedical subjects
A Mariscal
Publications and source records attributed to A Mariscal.
Evaluation of the toxicity of several heavy metals by a fluorescent bacterial bioassay.
This new bioassay determined the toxicity of chemical compounds dissolved in water by measuring the degree of inhibition of the ultraviolet light-stimulated fluorescence of Escherichia coli in a culture medium in which 4-methylumbelliferyl beta-D-glucuronide was the only carbon source. Inhibition produced by one of five heavy-metal salts (Cd2+, Cr6+, Hg2+, Pb2+ or Zn2+) was the end-point and comparison standard to determine the EC50 and minimum effective concentration (MEC) that produced a decrease of E. coli growth rate, increased doubling time and percentage inhibition and reduced numbers of generations; all these values were derived from the fluorescence signals. Only Cr6+ and Hg2+ at two concentrations (0.25 and 0.5 mg l-1) almost completely inhibited this E. coli strain. All toxicant concentrations tested produced at least partial inhibitions of growth; Cr6+, Hg2+ and Cd2+, in that order, were most toxic, and Pb2+ the least. Zn2+ gave higher EC50 values at 3 h of incubation than at 4 h. The method was simple, rapid and inexpensive and would permit a large number of samples to be tested quickly.
Biological Assay↗
Xanthogranulomatous cholecystitis: a radiological study of 12 cases and a review of the literature.
BACKGROUND: Twelve cases of xanthogranulomatous cholecystitis (XGC) are presented, and their radiologic appearance is described. METHODS: Four men and eight women, aged 31-82 years old, with XGC were reviewed. Abdominal ultrasound (US) was performed in all patients. Computed tomography (CT) was performed in five patients, barium enema examination in two, and percutaneously CT-guided fine-needle aspirative biopsy of the gallbladder in one. RESULTS: Barium enema examination showed an indentation of the hepatic flexure. Cholelithiasis was present in all patients, and sludge was present in six. The gallbladder wall was thickened in all patients, irregular in nine, and could not be properly differentiated from surrounding liver parenchyma or from other adjacent structures in most patients. A curvilinear halo, hypoechoic on US and with low attenuation on CT, within the gallbladder wall was found in three patients and pericholecystic fluid in two others. On CT, the pericholecystic fat had streaky soft tissue densities in three cases. Percutaneously CT-guided fine-needle aspirative biopsy of the gallbladder was nondiagnostic. The diagnosis of gallbladder carcinoma was considered preoperatively in three patients. CONCLUSION: Despite the characteristic histologic appearance of XCG, radiologic findings are nonspecific, varying from signs observed in other forms of cholecystitis to the appearance of a gallbladder neoplasm.
Adipose Tissue↗
Scrotal cystocele: US and CT findings in two cases.
Massive inguinoscrotal herniation of the bladder (i.e. scrotal cystocele) is very uncommon. We describe the ultrasonography and computed tomography features of scrotal cystocele in two patients, and review the radiologic findings of this rare entity reported in the literature.
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