Upper-urinary-tract urothelial tumors: conservative treatment by Nd:YAG laser

Franco Gaboardi M.D.; Andrea Bozzola; Tommaso Melodia; Gildo Maria Gulfi; Stefano Galli

doi:10.1117/12.146228

28 May 1993 Upper-urinary-tract urothelial tumors: conservative treatment by Nd:YAG laser

Franco Gaboardi M.D., Andrea Bozzola, Tommaso Melodia, Gildo Maria Gulfi, Stefano Galli

Proceedings Volume 1879, Lasers in Urology, Gynecology, and General Surgery; (1993) https://doi.org/10.1117/12.146228
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

Upper urinary malignancies are rare tumors whose diagnosis sometimes represents a difficult dilemma. In selected cases, it is possible to treat the tumor with laser irradiation. This approach is reserved to low-stage low-grade tumors, a tumor in a solitary kidney, bilateral syncroneous disease or patients with deterioration of renal function. Thirty one patients suspected to have malignancies, as they presented upper tract filling defects at IVP, underwent uretero-pyeloscopy to confirm the diagnosis. Twenty patients with upper urinary tract urothelial tumors were treated with Nd:YAG laser irradiation. Before the procedure, the ureter and the pelvis were accessed by 0.038 inch guide-wire or 4 French ureteral catheter. A power of 25 - 30 watts/3 seconds was carried out for the laser irradiation of the tumor and of the base. Sometime after the procedure a ureter single J catheter was left indwelling for 48 hours. In the follow-up the patients had endoscopic surveillance every three months. Actually 12 patients are tumor-free after 3 - 36 months. Eight patients had a recurrence after the first treatment and they underwent new laser irradiation. All the recurrences were in other sites of the upper urinary tract and seemed to be related to tumor grade. In conclusion, conservative endourological ureteropyeloscopy coupled with Nd:YAG laser irradiation should be considered a useful treatment in selected patients.

Citation Download Citation

Franco Gaboardi M.D., Andrea Bozzola, Tommaso Melodia, Gildo Maria Gulfi, and Stefano Galli "Upper-urinary-tract urothelial tumors: conservative treatment by Nd:YAG laser", Proc. SPIE 1879, Lasers in Urology, Gynecology, and General Surgery, (28 May 1993); https://doi.org/10.1117/12.146228

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KEYWORDS

Tumors

Laser irradiation

Nd:YAG lasers

Surgery

Endoscopy

Laser therapeutics

Biopsy

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