Treatment Options for Parapelvic Cysts. Parapelvic cyst is a kind of benign kidney lesion and it belongs to simple kidney cyst. Most kidney cysts are located at the renal cortical areas, being round and it can be single or multiple.Parapelvic cyst is located inside the renal sinus and large ones can protrude into renal hilum.reatment Options for Parapelvic Cysts. Parapelvic cyst is a kind of benign kidney lesion and it belongs to simple kidney cyst. Most kidney cysts are located at the renal cortical areas, being round and it can be single or multiple.