IRCT20090427001853N18 IRCT 2022-08-21 Urology Research Center, Guilan University of Medical Sciences The effect of total tubeless PCNL and tubeless PCNL on the outcomes of complete supine percutaneous nephrolithotomy The effect of total tubeless PCNL and tubeless PCNL on the outcomes of complete supine percutaneous nephrolithotomy (csPCNL): a single-blind randomized controlled trial 2022-09-06 anticipated 78 Complete https://irct.ir/trial/65312 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Diagnostic, Randomization description: Block randomization with blocks of 4 through a table of random numbers with a ratio of 1 to 1 (in two groups A and B) using a randomizer through the sealed envelope online program, Blinding description: One of the researchers (urology resident) divides the patients into two groups A (tubeless PCNL) and B (total tubeless PCNL) based on the table prepared from random blocks. The surgeon does not know the patient group until the operation time. The analyst will also be unaware of the type of patient grouping. At the top of the checklist that is completed for each patient, the type of group (A or B) is mentioned. 2-3 Postoperative complication of stent. Intervention 1: Intervention group: In the total tubeless PCNL group, at the end of the procedure, no stent will be implanted for the patient and the patient will be completely tubeless. Intervention 2: Control group: In the tubeless PCNL group, external stents are implanted for all patients after surgery. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is Due to the possibility of prolonging the study and publication of the article, researchers will decide regarding the details of sharing the unidentifiable personal data of the participants after the end of the study and publication of the results in the form of an article.