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Evaluation of non-papillary access on the 3D-printed renal collecting system model in fluoroscopic supine percutaneous nephrolithotomy: a pilot study      
Yazarlar (4)
Fatih Bicaklioglu
Kartal Dr. Lütfi Kırdar City Hospital, Turkey
Gurkan Dalgic
Sancaktepe Şehit Prof. Dr. İlhan Varank Training and Research Hospital, Turkey
Dr. Öğr. Üyesi Mehmet EZER Dr. Öğr. Üyesi Mehmet EZER
Kafkas Üniversitesi, Türkiye
Kemal Sarica
Sancaktepe Şehit Prof. Dr. İlhan Varank Training and Research Hospital, Turkey
Devamını Göster
Özet
Objective: Fluoroscopic access techniques may not reliably differentiate between papillary and non-papillary renal access during percutaneous nephrolithotomy (PNL), potentially leading to misinterpretations that could increase complication risks. This pilot study aimed to evaluate whether a novel radiopaque 3D-printed collecting system model could be used to investigate the feasibility of identifying non-papillary accesses using different biplanar fluoroscopic techniques in the supine PNL setting. Materials and methods: This experimental study was conducted in February 2023 using a 3D-printed Dentagum resin model of the renal collecting system fixed in a supine position. Five intentionally non-papillary accesses (two lower calyces, three middle calyces) that appeared papillary at a 0° fluoroscopic angle were created. Four biplanar fluoroscopic access techniques (0–30° cephalad, 0–30° caudal, 0–20° lateral, and 0–90°) were then employed to detect whether these accesses could be identified as non-papillary. Results: Among the five non-papillary accesses, 0–30° cephalad detected one (20%), 0–30° caudal detected two (40%), and 0–90° detected two (40%), while 0–20° lateral detected none. Both non-papillary accesses in the lower calyx were correctly identified using 0–90°, with one additionally detected by 0–30° cephalad and the other by 0–30° caudal. Of the three non-papillary middle calyx accesses, only one was detected (via 0–30° caudal), whereas the other two were missed by all tested angles. Additional angles (e.g., 60° lateral–30° cephalad) further increased non-papillary detection rates. Conclusions: This pilot study demonstrates that non-papillary accesses may appear papillary under standard biplanar fluoroscopic techniques, suggesting a risk of misinterpretation and underscoring the potential benefit of incorporating additional imaging angles to improve detection accuracy.
Anahtar Kelimeler
Fluoroscopy | Kidney papilla | Kidney stone | Papillary puncture | Percutaneous nephrolithotomy | Three-Dimensional printing
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı BMC Urology
Dergi ISSN 1471-2490 Wos Dergi Scopus Dergi
Dergi Grubu Q3
Makale Dili İngilizce
Basım Tarihi 12-2025
Cilt No 25
Sayı 1
Doi Numarası 10.1186/s12894-025-01856-x