S. Park, J. H. Kim, J. H. Hwang, K. H. Lee, and S. H. Yu, “Percutaneous Internal Drainage in Symptomatic Renal Parapelvic Cyst Refractory to Sclerotherapy: A Case Report: Novel Percutaneous Internal Drainage for Renal Cyst”, Urol J, vol. 19, no. 04, pp. 339–342, May 2022.