IMPROVED THCHNIQUE FOR ENDOSONOGRAPHIC EVALUATION OF EARLY COLORECTAL CANCER USING TWO-CHANNEL ELECTRONIC VIDEO-COLONOSCOPE

Yasumasa NIWA; Yoshihisa TSUKAMOTO; Hidemi GOTO; Satoshi HASE; Masahiro YOSHIDA; Kenji NISHIMURA; Masaya SHIMODAIRA; Akihiro MIYATA; Nakaba HASEGAWA; Tsutomu TAKEDA; Tetsuya OOIWA; Yoshimichi HIROSE; Tetsuo HAYAKAWA; Yasuo NAITO

doi:10.11280/gee1973b.37.97

Yasumasa NIWA, Yoshihisa TSUKAMOTO, Hidemi GOTO, Satoshi HASE, Masahiro YOSHIDA, Kenji NISHIMURA, Masaya SHIMODAIRA, Akihiro MIYATA, Nakaba HASEGAWA, Tsutomu TAKEDA, Tetsuya OOIWA, Yoshimichi HIROSE, Tetsuo HAYAKAWA, Yasuo NAITO

Author information

Yasumasa NIWA
Second Department of Internal Medicine, Nagoya University School of Medicine
Yoshihisa TSUKAMOTO
Department of Clinical Laboratory Nagoya University School of Medicine
Hidemi GOTO
Department of Clinical Laboratory Nagoya University School of Medicine
Satoshi HASE
Department of Clinical Laboratory Nagoya University School of Medicine
Masahiro YOSHIDA
Department of Clinical Laboratory Nagoya University School of Medicine
Kenji NISHIMURA
Department of Clinical Laboratory Nagoya University School of Medicine
Masaya SHIMODAIRA
Department of Clinical Laboratory Nagoya University School of Medicine
Akihiro MIYATA
Department of Clinical Laboratory Nagoya University School of Medicine
Nakaba HASEGAWA
Department of Clinical Laboratory Nagoya University School of Medicine
Tsutomu TAKEDA
Department of Clinical Laboratory Nagoya University School of Medicine
Tetsuya OOIWA
Department of Clinical Laboratory Nagoya University School of Medicine
Yoshimichi HIROSE
Department of Clinical Laboratory Nagoya University School of Medicine
Tetsuo HAYAKAWA
Department of Clinical Laboratory Nagoya University School of Medicine
Yasuo NAITO
Department of Clinical Laboratory Nagoya University School of Medicine

JOURNAL FREE ACCESS

1995 Volume 37 Issue 1 Pages 97-102_1

DOI https://doi.org/10.11280/gee1973b.37.97

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Abstract

In order to evaluate the depth of superficial colorectal cancer invasion as accurately as possible, we used a 2-channel electronic videocolonoscope and 15 MHz ultrasound probe (MP-PN series, Aloka Co. Ltd.). Through one channel, we pushed or withdrew the mucosa near the lesion by forceps. Through the other channel, we evaluated the depth of superficial colorectal cancer invasion using the ultrasound probe. By these procedures, we manipulated the mucosa near the lesion, and scanned the lesion vertically. We applied this examination to 6 patients with colorectal cancer (2 mucosal cancer, 4 submucosal cancer). We obtained a high diagnostic accuracy rate of 83.3%.

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