Background/Aim. Ultrasonographic kidney changes might be a part of the clinical picture, or consequence of the various infections diseases. The aim of this study was to establish ultrasonographic findings obtained by portable devices, the frequency of abnormal findings of the kidneys in the non-selected group of the patients with infections diseases. Methods. Over a five-year period (January 1, 2000-December 31, 2004), the kidneys were examined by ultrasonography in 2718 patients, 1452 males and 1266 females, mean age 47.52±17 years, (16-92 years). The examination included the measurement of the size of the kidneys, evaluation of the condition of parenchyma and pyelo-calix, detection of simple cysts, calculi and tumor. The conventional portable ultrasonographic devices ALOKA SSD-500 and SSD-1000 (B-mode) with a convex 3.5 and 5 MHz sonde were used. Results. The size of kidneys was normal in 95% of the patients, while they were enlarged in 1.3% and reduced in 1.5% of the patients. A normal ultrasonographic recording was noted in 68.9% of the patients, double pelvis in 0.1%, while hydronephrosis was revealed in 0.9% of the patients. A reduced renal parenchyma was observed in 16.1% of the patients. Nephrolithiasis was found in 10.9% of the patients, and simple cysts of kidneys in 8.9% of the patients. The finding of polycystic kidneys was seen in 0.5% of the patients. An ultrasonographic recording of angiomyolipoma was noted in 0.4% of the patients, and the finding of other tumors in 0.1% of the patients. Adrenal tumors were found in 0.1% of the patients. Conclusion. Portable ultrasonographic units may be highly useful for the standard morphological diagnostics of renal changes during infections, as well as in clinical-epidemiological studies and screening of hereditary and the acquired diseases of this organ.