EVALUATION OF ENDOSCOPIC COO2 LASER TREATMENT

Yoshihiro MIZUMA; Masatsugu NAKAJIMA; Kenjiro YASUDA; Eisai CHO; Hidekazu MUKAI; Takanobu HAYAKUMO; Tooru ASHIHARA; Shigeto MIZUNO; Seiichi HIRANO; Makoto HAYASHI; Etsuko IKEDA; Jun'ichi KONISHI; Gen'ichi KATO; Takayoshi MATSUI; Masao KOBAYASHI

doi:10.11280/gee1973b.33.717

EVALUATION OF ENDOSCOPIC COO₂ LASER TREATMENT

Yoshihiro MIZUMA, Masatsugu NAKAJIMA, Kenjiro YASUDA, Eisai CHO, Hidekazu MUKAI, Takanobu HAYAKUMO, Tooru ASHIHARA, Shigeto MIZUNO, Seiichi HIRANO, Makoto HAYASHI, Etsuko IKEDA, Jun'ichi KONISHI, Gen'ichi KATO, Takayoshi MATSUI, Masao KOBAYASHI

Author information

Yoshihiro MIZUMA
Department of Gastroenterology , Kyoto Second Red Cross Hospital, Kyoto, Japan.
Masatsugu NAKAJIMA
Department of Pathology, Kyoto Second Red Cross Hospital , Kyoto, Japan.
Kenjiro YASUDA
Department of Pathology, Kyoto Second Red Cross Hospital , Kyoto, Japan.
Eisai CHO
Department of Pathology, Kyoto Second Red Cross Hospital , Kyoto, Japan.
Hidekazu MUKAI
Department of Pathology, Kyoto Second Red Cross Hospital , Kyoto, Japan.
Takanobu HAYAKUMO
Department of Pathology, Kyoto Second Red Cross Hospital , Kyoto, Japan.
Tooru ASHIHARA
Department of Pathology, Kyoto Second Red Cross Hospital , Kyoto, Japan.
Shigeto MIZUNO
Department of Pathology, Kyoto Second Red Cross Hospital , Kyoto, Japan.
Seiichi HIRANO
Department of Pathology, Kyoto Second Red Cross Hospital , Kyoto, Japan.
Makoto HAYASHI
Department of Pathology, Kyoto Second Red Cross Hospital , Kyoto, Japan.
Etsuko IKEDA
Department of Pathology, Kyoto Second Red Cross Hospital , Kyoto, Japan.
Jun'ichi KONISHI
Department of Pathology, Kyoto Second Red Cross Hospital , Kyoto, Japan.
Gen'ichi KATO
Department of Pathology, Kyoto Second Red Cross Hospital , Kyoto, Japan.
Takayoshi MATSUI
Department of Internal Medicine, Yodogawa Christian Hospital , Osaka, Japan.
Masao KOBAYASHI
Department of Internal Medicine, Yodogawa Christian Hospital , Osaka, Japan.

JOURNAL FREE ACCESS

1991 Volume 33 Issue 4 Pages 717-724_1

DOI https://doi.org/10.11280/gee1973b.33.717

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Abstract

A new fiber optic CO₂ laser system was developed, which made it possible to apply endoscopic treatment. The probe for endoscopic applications is 2.3 mm in diameter and 20mm in minimum bend radius. The tissue damage of the canine stomach was observed after the CO₂ laser irradiation. It was considered that the optimum condition to radiate on the mucosal lesion was 5mm in distance, 5-10 watts in output power and total 5 seconds in irradiation time. On the basis of these results, 38 cases of digestive tract diseases including 13 early gastric cancers have been treated with CO2 laser, and satisfactory results were obtained. The endscopic CO₂ laser treatment is considered to be effecive for mucosal cancer of stomach and biliary tract diseases.

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