{'fraction_non_alphanumeric': 0.024356297842727904, 'fraction_numerical': 0.0027835768963117608, 'mean_word_length': 4.9421487603305785, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
[Percutaneous treatment of postoperative stenosis of ureteropelvic junction. Use of the Korth stent].

Endopyelotomy is, in our opinion, the most proper therapeutic strategy for the treatment of UPF post-surgery stenosis, as a traditional re-operation is often difficult to be carried out and not exempt from possible stenotic relapse. We report 2 cases of secondary stenosis and inferior caliceal stones associated. As a first step we subjected the patients to a percutaneous lithotomy of the calculi and we kept a trans-calyceal nephrostomy in situ for about 5 days. Among the different EPT techniques, we chose the "transurethral traction" Rippa-Franch set, as the dynamic combined transurethral traction of the cold-knife allows a smooth dissection of the strongest cicatrix pad, too. The stenting of the dissected UPF has been carried out for few days by means of a Korth's temporaneous nephrostomy and subsequently, at light-coloured urine, by using the definitive Korth endostent by subcutaneous anchorage. This internal stenting system seems to be the most suitable one, as the patient can stand it quite well for long periods of time (3-6 months) too and it is not burden with V-U refluxes that could jeopardize the good result of the operation. The easy performance and good results achieved by this way, persuade us to suggest this two combined techniques as an effective endourological solution for UPF post-surgery stenosis.