[Urinary calculi and the single kidney].

The problems and interactions of urolithiasis and monorenality are presented in a survey covering four essential parameters: --Urolithiasis as an indication for nephrectomy: One nephrectomy in four is performed because of urolithiasis. This rate of nephrectomy has not changed in the last 50 years. --Recidive urolithiasis in the residual kidney: Around 37% of all monorenal persons have a diseased single or residual kidney.

[Results of the determination of enteral calcium absorption and calcium kinetics with 47Ca in patients with chronic recurring urolithiasis].

In the context of the classification of hypercalciuria in urolithiasis, the measurement of enteral calcium absorption is very important. A precise method is that of oral load with 47Ca and measurement of its activity by means of a human body counter; 47Ca activity in serum, urine and stools in simultaneously measured. To date 47 patients with chronically recidive calcium lithiasis (with between 3 and over 100 stone episodes) and an average age of 43.

[Detection of carbonic anhydrase in the human kidney from the viewpoint of acid-base regulation (an immunohistochemical study in urolithiasis patients)].

The enzyme carbonic anhydrase was detected with an indirect immunoperoxidase method in 22 kidney exploratory excisions of patients with urolithiasis, ren mobilis or stenosis of ureteral pelvic junction. The reactivity of carbonic anhydrase was related to disturbances in acid-base equilibrium. Carbonic anhydrase was detected in the convoluted parts of the distal tubules, connecting tubules and cortical collecting ducts.

[Problems of assessment and occupational rehabilitation of patients with malignant urogenital neoplasm].

The expert opinion and the rehabilitation of patients with urogenital tumours often render great problems and tasks for the urologist. A schematic invalidisation of these patients is to be refused. The leading idea of an expert opinion should be the rehabilitation.