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Biomedical subjects

E Becht

Publications and source records attributed to E Becht.

40 records · Page 3Linked to original sources
PubMed1984

Computed tomography in xanthogranulomatous pyelonephritis.

Two cases of xanthogranulomatous pyelonephritis (XGP) examined preoperatively by computed tomography are reported. In one, preoperative diagnosis of an inflammatory abscess-forming disease was possible. Several features of computed tomography in XGP permit differentiation from renal carcinoma. Global renal enlargement, the presence of calculi, the spread of infiltration into the fatty capsule with thickening of Gerota's fascia, and the characteristic density differences between cortex and medulla as a result of reduced contrast medium concentrations in the pyramids are suspicious of this special form of interstitial nephritis.

Diagnosis, Differential↗
PubMed1983

Red blood cell sodium transport and phosphate release in uremia.

Red blood cell (RBC) phosphate release was linear for more than 1 h and dependent on the intracellular hydrolysis of organic phosphate esters. In uremics on chronic hemodialysis total phosphate release was significantly increased suggesting an elevated RBC energy metabolism. Ouabain-sensitive phosphate release, however, was decreased. For RBCs of controls and uremic subjects approximately 80% of inorganic phosphate liberated within the cell was recycled. Thus, RBC phosphate release represents 20% of intracellular phosphate ester metabolism. In uremia active electrolyte transport was diminished, suggesting an impaired Na-K-ATPase activity. It resulted in an increased RBC sodium and a decreased potassium concentration. The positive correlation between ouabain-sensitive rate constant for sodium efflux and ouabain-sensitive RBC phosphate release indicates that ouabain inhibition of phosphate elimination might be related to Na-K-ATPase. In RBCs of uremic subjects almost 4% of the increased energy metabolism was needed for active electrolyte transport mechanisms, in control RBCs 12% was required.

Biological Transport, Active↗
PubMed1981

Malignant fibrous histiocytoma of the renal capsule.

We report about an extremely rare case of malignant fibrous histiocytoma (MFH) of the renal capsule. The tumor is composed of fibroblast-like cells arranged in a storiform pattern and histiocyte-like cells with multinucleated giant cells, both showing no iron reaction. Characteristic of the histiocytic quality of the tumor are numerous PAS-positive intracytoplasmic droplets which can be identified as erythrophagosomes only under the electron microscope. Emphasis is put on the preoperative differential diagnosis of the tumor from renal cell carcinoma as well as on its histogenesis and prognosis.

Aged↗