[Acquired cysts of the kidney in patients treated with long-term dialysis]. / Nabyte torbiele nerek (NT) u pacjentów przewlekle dializowanych.

There are many reports about development of AC in patients on dialysis therapy (DT) and about their pathophysiological consequences. The aim of our studies was to determine the prevalence of AC in patients treated with hemodialysis in dialysis centre in Gdansk. We also tried to asses relationship between the presence of AC, age and sex of the patients, the duration of DT and level of haemoglobin (Hb), hematocrit (Ht), red blood cells (RBC) and the prevalence of hypertension (H). Renal ultrasound scan was performed in 54 patients, among them 26 (48.5%) had acquired cysts. No correlation was found between presence of cysts and age, sex and nature of the underlying renal disease. There was a positive correlation between the prevalence of AC and the duration of DT (DT < 1 year--36.8/, DT < 3 years--42.8%, DT > 3 years--59%), it did not, however, reach statistical significance. Haematological parameters did not differ significantly between both groups, AC--patients, however, received more blood transfusions (2983 ml/year vs. 2485 ml/year). Similarly, there were no differences in systolic and diastolic blood pressures (mean yearly values before and after HD) between both groups, but in AC+ group more patients needed intensive treatment with hypotensive drugs. Our results indicate that the prevalence of AC increases with the duration of DT. The possibility that the presence of AC may influence severity of anaemia and hypertension is suggested.

[Atrophy of the mandible and maxilla as complication of treatment and healing of jaw fractures]. / Zanik zuchwy i szczeki jako powiklanie leczenia i gojenia ich zlaman.

The authors discuss in the light of literature data the causes of bone atrophy and report two own cases of extensive atrophy of the mandible and atrophy of the maxilla developed during treatment of their fractures. Parallel mandibular atrophy in a patient aged 67 years was observed 3 years after surgical union of fractured fragments of the edentulous mandible with metal plates. The cause of atrophy is related by the authors to prolonged malnutrition of the patient who had partial gaestrectomy 24 years earlier, and his failure to observe the suggested mandible immobilization during the required length of time. Considerable degree of maxilla atrophy in a 34-year-old man developed during treatment of a Le Fort III maxilla fracture. The atrophy affected mainly the apical base of the alveolar process, and it was observed 4 months after fracture. The cause was not systematic, prolonged without informing the stomatologist, and excessive traction was exerted by the rubber band in the chin-sling used for the treatment of the fracture. The treatment used in this case permitted to restore in the maxilla the proportions of bone structures approaching the normal ones.