hi thank you for the query sir I have gone through your query and understood your concerns.. sir a parapelvic cyst of the kidney is realtively common problem encountered in urological examination...but rarely need treatment...unless it is presented with symptomatic renal stones, pyelonephritis and back discomfort...how ever considering your family history of renal malignancy I would like to advise you appropriate diagnostic measures and follow up regularly...and coming to your liver cysts ..common causes of hepatic cysts found to be simple cysts neoplastic cysts PCLD hydatid cysts liver abscess get liver function tests done and appropriate diagnostic procedures to rule out neoplastic liver cysts after consulting your Gastroenterologist... hope I have answered your query wish you good health thank you follow up queries will be welcomed regards DR Alekhya