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Updated: Mar 19, 2026

Accurate and Simple Evaluation of Vascular Anastomoses in Monochorionic Placenta using Colored Dye
Published on: September 5, 2011
Hemodynamic evaluation of rectal varices by color Doppler ultrasonography: a case report
Masayuki Nakanowatari1, Takahiro Sato2, Katsu Yamazaki2
1Department of Gastroenterology, Sapporo Kosei General Hospital, Kita 3 Higashi 8, Chuo, Sapporo, Hokkaido, 060-0033, Japan. m.nakanowatari@ja-hokkaidoukouseiren.or.jp.
Abstract:
A 69-year-old man with liver cirrhosis was admitted to our hospital with general fatigue. Colonoscopy revealed risky red color sign-positive enlarged tortuous rectal varices. Endoscopic injection sclerotherapy (EIS) was performed three times weekly using 5% ethanolamine oleate with iopamidol; the total amount of sclerosant was 7 ml. Images of rectal varices and the outflowing vessel from rectal varices were obtained via color Doppler ultrasonography before EIS, and fast Fourier transform analysis showed a continuous flow with a frequency shift of 276.6 Hz. We successfully performed EIS for this patient, having effective varicealography. After EIS, colonoscopy revealed shrinkage of the varices in the rectum, and color Doppler indicated an extreme decrease of blood flow in the rectal varices. In conclusion, color Doppler is a useful noninvasive modality for detecting rectal varices and for evaluating the therapeutic effects of EIS.
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