Pathological Studies Of The Bladder Wall After Contact Nd-YAG Laser Irradiation In Treatment For Bladder Cancer.

Hiroto Washida; Hideki Watanabe; Hiroshi Sakagami; Syoichi Sakaki; Takeshi Hori; Syoji Fukushima; Masato Asamoto

doi:10.1117/12.945312

15 June 1988 Pathological Studies Of The Bladder Wall After Contact Nd-YAG Laser Irradiation In Treatment For Bladder Cancer.

Hiroto Washida, Hideki Watanabe, Hiroshi Sakagami, Syoichi Sakaki, Takeshi Hori, Syoji Fukushima, Masato Asamoto

Author Affiliations +

Proceedings Volume 0907, Laser Surgery: Characterization and Therapeutics; (1988) https://doi.org/10.1117/12.945312
Event: 1988 Los Angeles Symposium: O-E/LASE '88, 1988, Los Angeles, CA, United States

Abstract

From February 1984 to the present, we have treated 75 patients with bladder cancer through the contact Nd:YAG laser irradiation method. Eighteen males and two females (average age 62 years) were transurethrally treated with the contact Nd-YAG laser from 2 to 42 weeks prior to radical cystectomy. The pathological findings of the regions were summarized as follows: 1. Ulcers and granulations were formed., 2. The granulation reached to superficial and/or deep muscle of the bladder wall, but not to the serosa., 3. Foreign body giant cells resulting from carbonized tissue were observed in the granulation., 4. Hyperplasia of periheral tissue mucosa of the regions were observed., 5. There were no residual cancer cells at the irradiated area in all of the Pts. but in one Pts. with a clinical stage T 3, 6. There was no evidence of implantation and growth promotion of cancer cells. We are convinced that contact Nd-YAG laser surgery will play an important role in transurethral treatment of bladder cancers.

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Hiroto Washida, Hideki Watanabe, Hiroshi Sakagami, Syoichi Sakaki, Takeshi Hori, Syoji Fukushima, and Masato Asamoto "Pathological Studies Of The Bladder Wall After Contact Nd-YAG Laser Irradiation In Treatment For Bladder Cancer.", Proc. SPIE 0907, Laser Surgery: Characterization and Therapeutics, (15 June 1988); https://doi.org/10.1117/12.945312

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