The most common symptom of PKD is high blood pressure. Other symptoms are: 1  Pain in the back and side. 2  Blood in the urine. 3  Frequent kidney infections.he most common symptom of PKD is high blood pressure. Other symptoms are: 1  Pain in the back and side. 2  Blood in the urine. 3  Frequent kidney infections.
The longest river of Europe is the River Volga. It flows primarily in a southerly direction through Russia into the Caspian Sea. The second longest is the Danube, flows west to east before entering the Black Sea.
Danube. The blue Danube, celebrated in a song of the same name, flows through Germany, Hungary, Serbia, Croatia, Austria, Slovakia, Romania and Bulgaria. At 1,780 miles long, the Danube is Europeâs longest river.