[Solitary renal cyst as a focus of sepsis in a child].

Report on a 9-year-old boy with infected solitary cyst of the kidney on the left, resulting from this chronic relapsing sepsis with abscess of the spleen, perforation of the abscess into the left subphrenium, subphrenical abscess, basic empyema of the pleura on the left, purulent system of the fistulae in the left upper retroperitoneum. Causative organism: staphylococcus aureus. After 6 successless attempts to command the process from the flank side section, the transperitoneal radical operation with extirpation of the spleen, resection of the cyst and removal of the left upper retroperitoneum was carried out. After transient improvement acute relapse of the sepsis after 6 months with subcutaneous abscesses and empyema of the ankle joint on the left. Causative organism again staphylococcus aureus. Under repeated surgical, antibiotical and general treatment rapid and final disappearing of the sepsis. Since 3 1/2 years free from recidivation.