Percutaneous renal and ureteric stone extraction. Report on the first 500 operations.

A consecutive series of the first 500 percutaneous renal and ureteric stone extractions in 451 patients was analysed. During the period studied, percutaneous extraction was offered to all patients with conventional indication for stone removal except a few, very early ureteric stone patients in whom open lithotomy was carried out. Ureteroscopy and extracorporeal shock wave lithotripsy had not come into routine use.

Hospital mortality and long-term survival in relation to preoperative function in elderly patients with bronchogenic carcinoma.

During an eight-year period, 82 patients 70 years of age or older were operated on for bronchogenic carcinoma. Hospital mortality was 15.9%, and five-year survival was 32%.

Increased erythrocyte sodium efflux during overfeeding without evidence of mediation by circulating catecholamines or thyroid hormone.

Ten slightly obese middle-aged men were instructed to increase their energy intake 25% during a period of 1 week, which was preceded by a control period of seven days. Body weight increased by 0.67 kg (SD 0.