Association between Simple Renal Cysts and Frequency of Hypertension in Patients with Microscopic Hematuria

Aim: Simple renal cyst is the most common cystic formation in adults. The relationship between simple renal cyst and hypertension incidence is still controversial. In this study it is aimed to determine any association between simple renal cyst and frequency of hypertension in patients with microscopic hematuria. Material and Methods: The study was designed by reviewing results of 200 patients with ages between 51 and 89 retrospectively and creating two groups, among 1075 patients who had undergone abdominal ultrasonography and abdominal computer tomography due to microscopic hematuria. The patients were evaluated into two groups regarding presence of simple renal cyst or not. The relationship between simple renal cyst and hypertension was analyzed. Results: There is no significant difference between two groups according to demographic features such as age and gender. Hypertension rate was not differ significantly between the simple renal cyst group and control group (p=0.471). It was detected that cyst size, presence of multiple cysts, cysts at more than one location and bilateral cysts were increased the hypertension rate in addition to age in patients with simple renal cyst (all p values <0.001). Cut-off level of cyst size for hypertension diagnosis was determined as ≥2 cm (AUC=0.949, 95% GA=0.903-0.995, p<0.001). Conclusion: As a result, we found a significant association between frequency of hypertension and presence of 2 cm and greater simple renal cysts, presence of multiple cysts and presence of bilateral cysts. Further prospective researches are required to determine the reason and the necessary management