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Observation of esophageal varices using a radial-arrayed echoendoscope (FUJIFILM, EG-580UR). (a) Observation in B-mode. Perforating veins (short arrow) and esophageal varix (long arrow) are observed. (b) Color Doppler observation. The esophageal varix (long arrow) is seen as a flow of mixed red and blue signals. Furthermore, the perforating vein (short arrow) is primarily presented in blue, and this site acts as the outflow passage from esophageal varices.
