{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T11:43:55Z","timestamp":1792064635481,"version":"4.4.0"},"reference-count":0,"publisher":"AVES YAYINCILIK A.\u015e.","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["URP"],"abstract":"<jats:p>Abstract\n\tObjective: To evaluate the stone hardness in predicting the need for single or two sessions of retrograde intrarenal surgery (RIRS) for renal pelvis stones of 2-3 cm in size.\n\n\t \n\n\tMaterial and methods: Ninety-six patients (64 male and 32 female) with only renal stones (2.5\u00b10.3 cm) underwent RIRS using flexible 7.5 Fr ureteroscope (FURS). The stone hardness was evaluated by preoperative non-contrast computed tomography (NCCT). The patients were divided into two groups based on stone hardness: Group I (n=54) (hard stones - Hounsfield Unit (HU) &gt;1000) and group II (n=42) (not hard stone - HU &lt;1000). The stone- free rate, the operative time, any intra or postoperative complications and the need for second sessions of RIRS were evaluated.\n\n\t \n\n\tResults: All stones were successfully accessed. Intraoperative complications were not reported. The initial stone- free rate was 40% in Group I and 95% in Group II after a single session (p=0.01). A second session FURS was needed in 32 cases of Group I (40%) where postoperative CT showed significant residual stone fragments of 6\u00b12 mm, and stone-free rate up to 100 percent. On the contrary only 2 cases from Group II underwent second session FURS (p=0.01). The operative times were 75\u00b115 minutes in Group I and 55\u00b113 minutes in Group II (p&lt;0.01). Six patients (4 in group I and 2 in group II) had postoperative high- grade fever (Clavien Grade II).\n\n\t \n\n\tConclusion: Stone hardness had a significant impact on the decision of performing single versus two sessions of FURS for renal pelvic stones of 2-3 cm rather than the stone size alone.<\/jats:p>","DOI":"10.5152\/tud.2017.61257","type":"journal-article","created":{"date-parts":[[2017,5,3]],"date-time":"2017-05-03T10:36:38Z","timestamp":1493807798000},"page":"158-161","source":"Crossref","is-referenced-by-count":14,"title":["Single session vs two sessions of flexible ureterosopy (FURS) for dusting of renal pelvic stones 2-3 cm in diameter: Does stone size or hardness play a role in number of sessions to be applied?"],"prefix":"10.5152","volume":"43","author":[{"given":"Ahmed Mamdouh Abd El","family":"Hamed","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hazem","family":"Elmoghazy","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mohamed","family":"Aldahshoury","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ahmed","family":"Riad","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mohammed","family":"Mostafa","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fawzy","family":"Farag","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wael","family":"Gamal","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"3111","published-online":{"date-parts":[[2019,7,25]]},"container-title":["Urology Research and Practice"],"original-title":[],"link":[{"URL":"https:\/\/urologyresearchandpractice.org\/index.php\/pub\/article\/download\/2962\/2958","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2026,3,4]],"date-time":"2026-03-04T18:15:28Z","timestamp":1772648128000},"score":1,"resource":{"primary":{"URL":"https:\/\/urologyresearchandpractice.org\/index.php\/pub\/article\/view\/2962"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,7,25]]},"references-count":0,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2017,1,1]]}},"URL":"https:\/\/doi.org\/10.5152\/tud.2017.61257","relation":{},"ISSN":["2980-1478"],"issn-type":[{"value":"2980-1478","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019,7,25]]}}}